In rete http://www.elegio.it/omnia/nu/elemen-monoiso.html

A proposito di Avogadro: elementi monoisotopici http://www.webelements.com/

NOMESimboloPeso Atomico( p+n; p)
BerillioBe9.0122( 9; 4)
FluoroF18.9984( 19; 9)
SodioNa22.9898( 23; 11)
AlluminioAl26.9815( 27; 13)
FosforoP30.9738( 31; 15)
ScandioSc44.956( 45; 21)
ManganeseMn54.938( 55; 25)
CobaltoCo58.933( 59; 27)
ArsenicoAs74.9216( 75; 33)
IttrioY88.905( 89; 39)
NiobioNb92.906( 93; 41)
RodioRh102.905(103; 45)
IodioI126.904(127; 53)
CesioCs132.905(133; 55)
PraseodimioPr140.907(141; 59)
TerbioTb158.924(159; 65)
OlmioHo164.930(165; 67)
TulioTm168.934(169; 69)
OroAu196.967(197; 79)
BismutoBi208.980(209; 83)
TorioTh232.038(232; 90)

Gli elementi monoisotopici sono quelli naturali che posseggono un solo isotopo nucleare stabile e che quindi sono intrinsecamente "puri". Il torio è leggermente radioattivo ma con periodo di decadimento tanto lungo da essere circa uguale all'età dell'universo: ce ne sarà anche quando l'universo avrà raddoppiato la sua età!
La maggioranza degli elementi naturali è, viceversa, pluriisotopica ossia è fatta da una miscela di diversi tipi di nuclei, a partire dall'idrogeno che è costituito da una miscela di idrogeno senza neutroni e un solo protone, e di deuterio contenente un protone e un neutrone. Sono pluriisotopici il carbonio (isotopi stabili 12 e 13, naturale ma radioattivo il 14), l'azoto, l'ossigeno, il ferro, il rame, lo zinco, lo stagno, l'argento, il platino, il piombo etc..
Un oggetto anche purissimo di un elemento pluriisotopico come il carbonio, ad esempio, ha un peso variabile a seconda dei rapporti della miscela tra carbonio 12 e carbonio 13.
Per gli elementi monoisotopici è facile calcolare, con la precisione dello 0.2% ed oltre, quanti atomi sono contenuti in un oggetto di massa nota. Per fare questo basta conoscere il numero di Avogadro, in informatichese A=6.02214199e23 ovvero, scritto usando gli zeri: A=602214199000000000000000 ( circa 3/5 di un milione di milioni di milioni di milioni ): 9 grammi di berillio o 232 grammi di torio contengono un ugual numero di atomi ossia, appunto, il numero di Avogadro.
Visto che sono un vulcano di proposte strane, ne lancio qui una. Il campione universale della massa (il kg) è attualmente un oggetto fisico, conservato in un dato posto. Purtroppo non sono ancora riusciti a misurare con precisione adeguata la massa di un oggetto contenente un numero esatto di atomi. Confido che, prima o poi, ci riescano ed allora ...ecco qui la mia proposta.
Noto che 1023 atomi di oro pesano circa 32.7 grammi ed ovviamente 1022 atomi pesano 3.27 grammi. Sono due valori che assomigliano ad unità di massa antiche: l'oncia troy usata per misure di metalli prezioni equivale a 31.1 grammi e il ducato veneziano, spesso detto zecchino e fatto di oro purissimo, pesa poco più di 3 grammi, un decimo di oncia. Dunque perché non chiamare oncia di Avogadro la massa di 1023 atomi di oro e come suo sottomultiplo lo zecchino di Avogadro esattamente 1022 atomi d'oro ?
Non sarebbe un omaggio ad Avogadro ed un modo di definire, in modo fisico discreto, una unità di massa con chiaro richiamo alla tradizione storica ?




  • www.theodoregray.com/ che come me vede la chimica come altissima forma di matematica (anzi Mathematica)
  • www.element-collection.com The Most Beautiful Periodic Table Displays in the World
  • http://www.elegio.it/omnia/nu/atomic_mass_abund.pdf Table of Isotopic Masses and Natural Abundances
  • http://www.elegio.it/omnia/nu/eq-trasporto-fem-thesis.pdf Una splendida tesi di laurea di CHRISTOPHER JOHN GESH che cita persino Franco Brezzi ( http://it.wikipedia.org/wiki/Franco_Brezzi ) oltre, naturalmente a R. T. Ackroyd, James J. Duderstadt, Louis J. Hamilton, William R. Martin, O. C. Zienkiewicz, Gene E. Golub and Charles F. Van Loan etc...
    •

    Giocare all'alchimista con influssi magnetico-radioattivi (attenti a non finire sul rogo come G.B. dove G. sta qui per Giordano)

  • Prodotti per ricerca (rappresentante italiano Goodfellow)
  • Materiale da laboratorio, reagenti
  • Materiale da laboratorio, rappresentante CarloErba
  • Materiale da laboratorio, altro rappresentante CarloErba
  • Platino e palladio ma non solo (perché perdere soldi solo con le azioni in borsa? Anche il mercato dei metalli preziosi può dare forti emozioni)
  • Smart elements: metalli insoliti: vende persino Uranio impoverito (Uranium glass marbles)
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  • http://www.supermagnete.it/ Vendono magneti anche in Italia
  • Vetri di Uranio denominati commercialmente come vaseline glass
  • Dove acquistare artistici vaseline glass (1)
    •  Info sul depleted uranium si possono trovare in http://en.wikipedia.org/wiki/Depleted_uranium
    ...Tabella tratta dalla Wikipedia... Per capire cosa vuol dire isotopo leggere http://it.wikipedia.org/wiki/Isotopo
    1
    H    		 2
    He
    3
    Li    		 4
    Be    		 5
    B    		 6
    C    		 7
    N    		 8
    O    		 9
    F    		 10
    Ne
    11
    Na    		 12
    Mg    		 13
    Al    		 14
    Si    		 15
    P    		 16
    S    		 17
    Cl    		 18
    Ar
    19
    K    		 20
    Ca    		 21
    Sc    		 22
    Ti    		 23
    V    		 24
    Cr    		 25
    Mn    		 26
    Fe    		 27
    Co    		 28
    Ni    		 29
    Cu    		 30
    Zn    		 31
    Ga    		 32
    Ge    		 33
    As    		 34
    Se    		 35
    Br    		 36
    Kr
    37
    Rb    		 38
    Sr    		 39
    Y    		 40
    Zr    		 41
    Nb    		 42
    Mo    		 43
    Tc    		 44
    Ru    		 45
    Rh    		 46
    Pd    		 47
    Ag    		 48
    Cd    		 49
    In    		 50
    Sn    		 51
    Sb    		 52
    Te    		 53
    I    		 54
    Xe
    55
    Cs    		 56
    Ba    		 * 72
    Hf    		 73
    Ta    		 74
    W    		 75
    Re    		 76
    Os    		 77
    Ir    		 78
    Pt    		 79
    Au    		 80
    Hg    		 81
    Tl    		 82
    Pb    		 83
    Bi    		 84
    Po    		 85
    At    		 86
    Rn
    87
    Fr    		 88
    Ra    		 ** 104
    Rf    		 105
    Db    		 106
    Sg    		 107
    Bh    		 108
    Hs    		 109
    Mt    		 110
    Ds    		 111
    Rg    		 112
    Cn    		 113
    Uut    		 114
    Fl    		 115
    Uup    		 116
    Lv    		 117
    Uus    		 118
    Uuo
    * 57
    La    		 58
    Ce    		 59
    Pr    		 60
    Nd    		 61
    Pm    		 62
    Sm    		 63
    Eu    		 64
    Gd    		 65
    Tb    		 66
    Dy    		 67
    Ho    		 68
    Er    		 69
    Tm    		 70
    Yb    		 71
    Lu
    ** 89
    Ac    		 90
    Th    		 91
    Pa    		 92
    U    		 93
    Np    		 94
    Pu    		 95
    Am    		 96
    Cm    		 97
    Bk    		 98
    Cf    		 99
    Es    		 100
    Fm    		 101
    Md    		 102
    No    		 103
    Lr
    Chi volesse guardare TUTTI gli isotopi abbastanza stabili ( con emivita da circa un secondo in su ), messi in una tabella strana ossia raggruppati in modo insolito può guardare questo documento che ho abbozzato oltre un anno fa e non ho ancora completato: http://www.elegio.it/omnia/20120830.xhtml ma naturalmente i tradizionalisti possono consultare questo documento: http://en.wikipedia.org/wiki/Category:Lists_of_isotopes_by_element.

    Consultando le varie masse degli isotopi è possibile fare una verifica veloce della natura esoenergetica o endoenergetica di una trasmutazione nucleare anche misteriosa come quelle ipotizzate dai sostenitori della fusione fredda. Qualunque cosa succeda durante la reazione, basta trasformare le energie in masse dividendole per il quadrato della velocità della luce o trasformare le masse in energia moltiplicandole per il quadrato della velocità della luce e vedere se, per conservare l'energia totale posseduta dagli elementi a monte della reazione chimica+nucleare bisogna aggiungere o togliere energia o massa ai prodotti a valle della pur misteriosa trasformazione chimica-nucleare... misteriosa come quella della fusione fredda...

    Experiments Home N-Lengths Instruments UserProposal SiteMap

    All of this data was taken from the Special Feature section of neutron scattering lengths and cross sections of the elements and their isotopes in Neutron News, Vol. 3, No. 3, 1992, pp. 29-37.

    The contents of the columns are as follows:

    Column Unit Quantity
    1 --- Isotope
    2 --- Natural abundance (For radioisotopes the half-life is given instead)
    3 fm bound coherent scattering length
    4 fm bound incoherent scattering length
    5 barn bound coherent scattering cross section
    6 barn bound incoherent scattering cross section
    7 barn total bound scattering cross section
    8 barn absorption cross section for 2200 m/s neutrons

    Note: 1fm=1E-15 m, 1barn=1E-24 cm^2, scattering lengths and cross sections in parenthesis are uncertainties.

    Neutron scattering lengths and cross sections
    Isotope[1]conc[2]Coh b[3]Inc b[4] Coh xs[5]Inc xs[6]Scatt xs[7]Abs xs[8]
    H --- -3.7390 --- 1.7568 80.26 82.02 0.3326
    1H 99.985 -3.7406 25.274 1.7583 80.27 82.03 0.3326
    2H 0.015 6.671 4.04 5.592 2.05 7.64 0.000519
    3H (12.32 a) 4.792 -1.04 2.89 0.14 3.03 0
    He --- 3.26(3) --- 1.34 0 1.34 0.00747
    3He 0.00014 5.74-1.483i -2.5+2.568i 4.42 1.6 6 5333.(7.)
    4He 99.99986 3.26 0 1.34 0 1.34 0
    Li --- -1.90 --- 0.454 0.92 1.37 70.5
    6Li 7.5 2.00-0.261i -1.89+0.26i 0.51 0.46 0.97 940.(4.)
    7Li 92.5 -2.22 -2.49 0.619 0.78 1.4 0.0454
    Be 100 7.79 0.12 7.63 0.0018 7.63 0.0076
    B --- 5.30-0.213i --- 3.54 1.7 5.24 767.(8.)
    10B 20 -0.1-1.066i -4.7+1.231i 0.144 3 3.1 3835.(9.)
    11B 80 6.65 -1.3 5.56 0.21 5.77 0.0055
    C --- 6.6460 --- 5.551 0.001 5.551 0.0035
    12C 98.9 6.6511 0 5.559 0 5.559 0.00353
    13C 1.1 6.19 -0.52 4.81 0.034 4.84 0.00137
    N --- 9.36 --- 11.01 0.5 11.51 1.9
    14N 99.63 9.37 2.0 11.03 0.5 11.53 1.91
    15N 0.37 6.44 -0.02 5.21 0.00005 5.21 0.000024
    O --- 5.803 --- 4.232 0.0008 4.232 0.00019
    16O 99.762 5.803 0 4.232 0 4.232 0.0001
    17O 0.038 5.78 0.18 4.2 0.004 4.2 0.236
    18O 0.2 5.84 0 4.29 0 4.29 0.00016
    F 100 5.654 -0.082 4.017 0.0008 4.018 0.0096
    Ne --- 4.566 --- 2.62 0.008 2.628 0.039
    20Ne 90.51 4.631 0 2.695 0 2.695 0.036
    21Ne 0.27 6.66 (+/-)0.6 5.6 0.05 5.7 0.67
    22Ne 9.22 3.87 0 1.88 0 1.88 0.046
    Na 100 3.63 3.59 1.66 1.62 3.28 0.53
    Mg --- 5.375 --- 3.631 0.08 3.71 0.063
    24Mg 78.99 5.66 0 4.03 0 4.03 0.05
    25Mg 10 3.62 1.48 1.65 0.28 1.93 0.19
    26Mg 11.01 4.89 0 3 0 3 0.0382
    Al 100 3.449 0.256 1.495 0.0082 1.503 0.231
    Si --- 4.1491 --- 2.163 0.004 2.167 0.171
    28Si 92.23 4.107 0 2.12 0 2.12 0.177
    29Si 4.67 4.70 0.09 2.78 0.001 2.78 0.101
    30Si 3.1 4.58 0 2.64 0 2.64 0.107
    P 100 5.13 0.2 3.307 0.005 3.312 0.172
    S --- 2.847 --- 1.0186 0.007 1.026 0.53
    32S 95.02 2.804 0 0.988 0 0.988 0.54
    33S 0.75 4.74 1.5 2.8 0.3 3.1 0.54
    34S 4.21 3.48 0 1.52 0 1.52 0.227
    36S 0.02 3.(1.) 0 1.1 0 1.1 0.15
    Cl --- 9.5770 --- 11.5257 5.3 16.8 33.5
    35Cl 75.77 11.65 6.1 17.06 4.7 21.8 44.1
    37Cl 24.23 3.08 0.1 1.19 0.001 1.19 0.433
    Ar --- 1.909 --- 0.458 0.225 0.683 0.675
    36Ar 0.337 24.90 0 77.9 0 77.9 5.2
    38Ar 0.063 3.5 0 1.5(3.1) 0 1.5(3.1) 0.8
    40Ar 99.6 1.830 0 0.421 0 0.421 0.66
    K --- 3.67 --- 1.69 0.27 1.96 2.1
    39K 93.258 3.74 1.4 1.76 0.25 2.01 2.1
    40K 0.012 3.(1.) --- 1.1 0.5 1.6 35.(8.)
    41K 6.73 2.69 1.5 0.91 0.3 1.2 1.46
    Ca --- 4.70 --- 2.78 0.05 2.83 0.43
    40Ca 96.941 4.80 0 2.9 0 2.9 0.41
    42Ca 0.647 3.36 0 1.42 0 1.42 0.68
    43Ca 0.135 -1.56 --- 0.31 0.5 0.8 6.2
    44Ca 2.086 1.42 0 0.25 0 0.25 0.88
    46Ca 0.004 3.6 0 1.6 0 1.6 0.74
    48Ca 0.187 0.39 0 0.019 0 0.019 1.09
    Sc 100 12.29 -6.0 19 4.5 23.5 27.5
    Ti --- -3.438 --- 1.485 2.87 4.35 6.09
    46Ti 8.2 4.93 0 3.05 0 3.05 0.59
    47Ti 7.4 3.63 -3.5 1.66 1.5 3.2 1.7
    48Ti 73.8 -6.08 0 4.65 0 4.65 7.84
    49Ti 5.4 1.04 5.1 0.14 3.3 3.4 2.2
    50Ti 5.2 6.18 0 4.8 0 4.8 0.179
    V --- -0.3824 --- 0.0184 5.08 5.1 5.08
    50V 0.25 7.6 --- 7.3(1.1) 0.5 7.8(1.0) 60.(40.)
    51V 99.75 -0.402 6.35 0.0203 5.07 5.09 4.9
    Cr --- 3.635 --- 1.66 1.83 3.49 3.05
    50Cr 4.35 -4.50 0 2.54 0 2.54 15.8
    52Cr 83.79 4.920 0 3.042 0 3.042 0.76
    53Cr 9.5 -4.20 6.87 2.22 5.93 8.15 18.1(1.5)
    54Cr 2.36 4.55 0 2.6 0 2.6 0.36
    Mn 100 -3.73 1.79 1.75 0.4 2.15 13.3
    Fe --- 9.45 --- 11.22 0.4 11.62 2.56
    54Fe 5.8 4.2 0 2.2 0 2.2 2.25
    56Fe 91.7 9.94 0 12.42 0 12.42 2.59
    57Fe 2.2 2.3 --- 0.66 0.3 1 2.48
    58Fe 0.3 15.(7.) 0 28 0 28.(26.) 1.28
    Co 100 2.49 -6.2 0.779 4.8 5.6 37.18
    Ni --- 10.3 --- 13.3 5.2 18.5 4.49
    58Ni 68.27 14.4 0 26.1 0 26.1 4.6
    60Ni 26.1 2.8 0 0.99 0 0.99 2.9
    61Ni 1.13 7.60 (+/-)3.9 7.26 1.9 9.2 2.5
    62Ni 3.59 -8.7 0 9.5 0 9.5 14.5
    64Ni 0.91 -0.37 0 0.017 0 0.017 1.52
    Cu --- 7.718 --- 7.485 0.55 8.03 3.78
    63Cu 69.17 6.43 0.22 5.2 0.006 5.2 4.5
    65Cu 30.83 10.61 1.79 14.1 0.4 14.5 2.17
    Zn --- 5.680 --- 4.054 0.077 4.131 1.11
    64Zn 48.6 5.22 0 3.42 0 3.42 0.93
    66Zn 27.9 5.97 0 4.48 0 4.48 0.62
    67Zn 4.1 7.56 -1.50 7.18 0.28 7.46 6.8
    68Zn 18.8 6.03 0 4.57 0 4.57 1.1
    70Zn 0.6 6.(1.) 0 4.5 0 4.5(1.5) 0.092
    Ga --- 7.288 --- 6.675 0.16 6.83 2.75
    69Ga 60.1 7.88 -0.85 7.8 0.091 7.89 2.18
    71Ga 39.9 6.40 -0.82 5.15 0.084 5.23 3.61
    Ge --- 8.185 --- 8.42 0.18 8.6 2.2
    70Ge 20.5 10.0 0 12.6 0 12.6 3
    72Ge 27.4 8.51 0 9.1 0 9.1 0.8
    73Ge 7.8 5.02 3.4 3.17 1.5 4.7 15.1
    74Ge 36.5 7.58 0 7.2 0 7.2 0.4
    76Ge 7.8 8.2 0 8.(3.) 0 8.(3.) 0.16
    As 100 6.58 -0.69 5.44 0.06 5.5 4.5
    Se --- 7.970 --- 7.98 0.32 8.3 11.7
    74Se 0.9 0.8 0 0.1 0 0.1 51.8(1.2)
    76Se 9 12.2 0 18.7 0 18.7 85.(7.)
    77Se 7.6 8.25 (+/-)0.6(1.6) 8.6 0.05 8.65 42.(4.)
    78Se 23.5 8.24 0 8.5 0 8.5 0.43
    80Se 49.6 7.48 0 7.03 0 7.03 0.61
    82Se 9.4 6.34 0 5.05 0 5.05 0.044
    Br --- 6.795 --- 5.8 0.1 5.9 6.9
    79Br 50.69 6.80 -1.1 5.81 0.15 5.96 11
    81Br 49.31 6.79 0.6 5.79 0.05 5.84 2.7
    Kr --- 7.81 --- 7.67 0.01 7.68 25.(1.)
    78Kr 0.35 --- 0 --- 0 --- 6.4
    80Kr 2.25 --- 0 --- 0 --- 11.8
    82Kr 11.6 --- 0 --- 0 --- 29.(20.)
    83Kr 11.5 --- --- --- --- --- 185.(30.)
    84Kr 57 --- 0 --- 0 6.6 0.113
    86Kr 17.3 8.1 0 8.2 0 8.2 0.003
    Rb --- 7.09 --- 6.32 0.5 6.8 0.38
    85Rb 72.17 7.03 --- 6.2 0.5 6.7 0.48
    87Rb 27.83 7.23 --- 6.6 0.5 7.1 0.12
    Sr --- 7.02 --- 6.19 0.06 6.25 1.28
    84Sr 0.56 7.(1.) 0 6.(2.) 0 6.(2.) 0.87
    86Sr 9.86 5.67 0 4.04 0 4.04 1.04
    87Sr 7 7.40 --- 6.88 0.5 7.4 16.(3.)
    88Sr 82.58 7.15 0 6.42 0 6.42 0.058
    Y 100 7.75 1.1 7.55 0.15 7.7 1.28
    Zr --- 7.16 --- 6.44 0.02 6.46 0.185
    90Zr 51.45 6.4 0 5.1 0 5.1 0.011
    91Zr 11.32 8.7 -1.08 9.5 0.15 9.7 1.17
    92Zr 17.19 7.4 0 6.9 0 6.9 0.22
    94Zr 17.28 8.2 0 8.4 0 8.4 0.0499
    96Zr 2.76 5.5 0 3.8 0 3.8 0.0229
    Nb 100 7.054 -0.139 6.253 0.0024 6.255 1.15
    Mo --- 6.715 --- 5.67 0.04 5.71 2.48
    92Mo 14.84 6.91 0 6 0 6 0.019
    94Mo 9.25 6.80 0 5.81 0 5.81 0.015
    95Mo 15.92 6.91 --- 6 0.5 6.5 13.1
    96Mo 16.68 6.20 0 4.83 0 4.83 0.5
    97Mo 9.55 7.24 --- 6.59 0.5 7.1 2.5
    98Mo 24.13 6.58 0 5.44 0 5.44 0.127
    100Mo 9.63 6.73 0 5.69 0 5.69 0.4
    Tc (2.3E5 a) 6.8 --- 5.8 0.5 6.3 20.(1.)
    Ru --- 7.03 --- 6.21 0.4 6.6 2.56
    96Ru 5.5 --- 0 --- 0 --- 0.28
    98Ru 1.9 --- 0 --- 0 --- <8.
    99Ru 12.7 --- --- --- --- --- 6.9(1.0)
    100Ru 12.6 --- 0 --- 0 --- 4.8
    101Ru 17 --- --- --- --- --- 3.3
    102Ru 31.6 --- 0 --- 0 144.8 1.17
    104Ru 18.7 --- 0 --- 0 4.483 0.31
    Rh 100 5.88 --- 4.34 0.3 4.6 144.8
    Pd --- 5.91 --- 4.39 0.093 4.48 6.9
    102Pd 1.02 7.7(7) 0 7.5(1.4) 0 7.5(1.4) 3.4
    104Pd 11.14 7.7(7) 0 7.5(1.4) 0 7.5(1.4) 0.6
    105Pd 22.33 5.5 -2.6(1.6) 3.8 0.8 4.6(1.1) 20.(3.)
    106Pd 27.33 6.4 0 5.1 0 5.1 0.304
    108Pd 26.46 4.1 0 2.1 0 2.1 8.55
    110Pd 11.72 7.7(7) 0 7.5(1.4) 0 7.5(1.4) 0.226
    Ag --- 5.922 --- 4.407 0.58 4.99 63.3
    107Ag 51.83 7.555 1.00 7.17 0.13 7.3 37.6(1.2)
    109Ag 48.17 4.165 -1.60 2.18 0.32 2.5 91.0(1.0)
    Cd --- 4.87-0.70i --- 3.04 3.46 6.5 2520.(50.)
    106Cd 1.25 5.(2.) 0 3.1 0 3.1(2.5) 1
    108Cd 0.89 5.4 0 3.7 0 3.7 1.1
    110Cd 12.51 5.9 0 4.4 0 4.4 11
    111Cd 12.81 6.5 --- 5.3 0.3 5.6 24
    112Cd 24.13 6.4 0 5.1 0 5.1 2.2
    113Cd 12.22 -8.0-5.73i --- 12.1 0.3 12.4 20600.(400.)
    114Cd 28.72 7.5 0 7.1 0 7.1 0.34
    116Cd 7.47 6.3 0 5 0 5 0.075
    In --- 4.065-0.0539i --- 2.08 0.54 2.62 193.8(1.5)
    113In 4.3 5.39 (+/-)0.017 3.65 0.000037 3.65 12.0(1.1)
    115In 95.7 4.01-0.0562i -2.1 2.02 0.55 2.57 202.(2.)
    Sn --- 6.225 --- 4.871 0.022 4.892 0.626
    112Sn 1 6.(1.) 0 4.5(1.5) 0 4.5(1.5) 1
    114Sn 0.7 6.2 0 4.8 0 4.8 0.114
    115Sn 0.4 6.(1.) --- 4.5(1.5) 0.3 4.8(1.5) 30.(7.)
    116Sn 14.7 5.93 0 4.42 0 4.42 0.14
    117Sn 7.7 6.48 --- 5.28 0.3 5.6 2.3
    118Sn 24.3 6.07 0 4.63 0 4.63 0.22
    119Sn 8.6 6.12 --- 4.71 0.3 5 2.2
    120Sn 32.4 6.49 0 5.29 0 5.29 0.14
    122Sn 4.6 5.74 0 4.14 0 4.14 0.18
    124Sn 5.6 5.97 0 4.48 0 4.48 0.133
    Sb --- 5.57 --- 3.9 0.007 3.9 4.91
    121Sb 57.3 5.71 -0.05 4.1 0.0003 4.1 5.75
    123Sb 42.7 5.38 -0.10 3.64 0.001 3.64 3.8
    Te --- 5.80 --- 4.23 0.09 4.32 4.7
    120Te 0.096 5.3 0 3.5 0 3.5 2.3
    122Te 2.6 3.8 0 1.8 0 1.8 3.4
    123Te 0.908 -0.05-0.116i -2.04 0.002 0.52 0.52 418.(30.)
    124Te 4.816 7.96 0 8 0 8 6.8(1.3)
    125Te 7.14 5.02 -0.26 3.17 0.008 3.18 1.55
    126Te 18.95 5.56 0 3.88 0 3.88 1.04
    128Te 31.69 5.89 0 4.36 0 4.36 0.215
    130Te 33.8 6.02 0 4.55 0 4.55 0.29
    I 100 5.28 1.58 3.5 0.31 3.81 6.15
    Xe --- 4.92 3.04 2.96 0 --- 23.9(1.2)
    124Xe 0.1 --- 0 --- 0 --- 165.(20.)
    126Xe 0.09 --- 0 --- 0 --- 3.5
    128Xe 1.91 --- 0 --- 0 --- <8
    129Xe 26.4 --- --- --- --- --- 21.(5.)
    130Xe 4.1 --- 0 --- 0 --- <26.
    131Xe 21.2 --- --- --- --- --- 85.(10.)
    132Xe 26.9 --- 0 --- 0 --- 0.45
    134Xe 10.4 --- 0 --- 0 --- 0.265
    136Xe 8.9 --- 0 3.69 0.21 3.9 29.0(1.5)
    Ba --- 5.07 --- 3.23 0.15 3.38 1.1
    130Ba 0.11 -3.6 0 1.6 0 1.6 30.(5.)
    132Ba 0.1 7.8 0 7.6 0 7.6 7
    134Ba 2.42 5.7 0 4.08 0 4.08 2.0(1.6)
    135Ba 6.59 4.67 --- 2.74 0.5 3.2 5.8
    136Ba 7.85 4.91 0 3.03 0 3.03 0.68
    137Ba 11.23 6.83 --- 5.86 0.5 6.4 3.6
    138Ba 71.7 4.84 0 2.94 0 2.94 0.27
    La --- 8.24 --- 8.53 1.13 9.66 8.97
    138La 0.09 8.(2.) --- 8.(4.) 0.5 8.5(4.0) 57.(6.)
    139La 99.91 8.24 3.0 8.53 1.13 9.66 8.93
    Ce --- 4.84 --- 2.94 0.001 2.94 0.63
    136Ce 0.19 5.80 0 4.23 0 4.23 7.3(1.5)
    138Ce 0.25 6.70 0 5.64 0 5.64 1.1
    140Ce 88.48 4.84 0 2.94 0 2.94 0.57
    142Ce 11.08 4.75 0 2.84 0 2.84 0.95
    Pr 100 4.58 -0.35 2.64 0.015 2.66 11.5
    Nd --- 7.69 --- 7.43 9.2 16.6 50.5(1.2)
    142Nd 27.16 7.7 0 7.5 0 7.5 18.7
    143Nd 12.18 14.(2.) (+/-)21.(1.) 25.(7.) 55.(7.) 80.(2.) 337.(10.)
    144Nd 23.8 2.8 0 1 0 1 3.6
    145Nd 8.29 14.(2.) --- 25.(7.) 5.(5.) 30.(9.) 42.(2.)
    146Nd 17.19 8.7 0 9.5 0 9.5 1.4
    148Nd 5.75 5.7 0 4.1 0 4.1 2.5
    150Nd 5.63 5.3 0 3.5 0 3.5 1.2
    Pm (2.62 a) 12.6 (+/-)3.2(2.5) 20.0(1.3) 1.3(2.0) 21.3(1.5) 168.4(3.5)
    Sm --- 0.80-1.65i --- 0.422 39.(3.) 39.(3.) 5922.(56.)
    144Sm 3.1 -3.(4.) 0 1.(3.) 0 1.(3.) 0.7
    147Sm 15.1 14.(3.) (+/-)11.(7.) 25.(11.) 143(19.) 39.(16.) 57.(3.)
    148Sm 11.3 -3.(4.) 0 1.(3.) 0 1.(3.) 2.4
    149Sm 13.9 -19.2-11.7i (+/-)31.4-10.3i 63.5 137.(5.) 200.(5.) 42080.(400.)
    150Sm 7.4 14.(3.) 0 25.(11.) 0 25.(11.) 104.(4.)
    152Sm 26.6 -5.0 0 3.1 0 3.1 206.(6.)
    154Sm 22.6 9.3 0 11.(2.) 0 11.(2.) 8.4
    Eu --- 7.22-1.26i --- 6.57 2.5 9.2 4530.(40.)
    151Eu 47.8 6.13-2.53i (+/-)4.5-2.14i 5.5 3.1 8.6 9100.(100.)
    153Eu 52.2 8.22 (+/-)3.2 8.5 1.3 9.8 312.(7.)
    Gd --- 6.5-13.82i --- 29.3 151.(2.) 180.(2.) 49700.(125.)
    152Gd 0.2 10.(3.) 0 13.(8.) 0 13.(8.) 735.(20.)
    154Gd 2.1 10.(3.) 0 13.(8.) 0 13.(8.) 85.(12.)
    155Gd 14.8 6.0-17.0i (+/-)5.(5.)-13.16i 40.8 25.(6.) 66.(6.) 61100.(400.)
    156Gd 20.6 6.3 0 5 0 5 1.5(1.2)
    157Gd 15.7 -1.14-71.9i (+/-)5.(5.)-55.8i 650.(4.) 394.(7.) 1044.(8.) 259000.(700.)
    158Gd 24.8 9.(2.) 0 10.(5.) 0 10.(5.) 2.2
    160Gd 21.8 9.15 0 10.52 0 10.52 0.77
    Tb 100 7.38 -0.17 6.84 0.004 6.84 23.4
    Dy --- 16.9-0.276i --- 35.9 54.4(1.2) 90.3 994.(13.)
    156Dy 0.06 6.1 0 4.7 0 4.7 33.(3.)
    158Dy 0.1 6.(4.) 0 5.(6.) 0 5.(6.) 43.(6.)
    160Dy 2.34 6.7 0 5.6 0 5.6 56.(5.)
    161Dy 19 10.3 (+/-)4.9 13.3 3.(1.) 16.(1.) 600.(25.)
    162Dy 25.5 -1.4 0 0.25 0 0.25 194.(10.)
    163Dy 24.9 5.0 1.3 3.1 0.21 3.3 124.(7.)
    164Dy 28.1 49.4-0.79i 0 307.(3.) 0 307.(3.) 2840.(40.)
    Ho 100 8.01 -1.70 8.06 0.36 8.42 64.7(1.2)
    Er --- 7.79 --- 7.63 1.1 8.7 159.(4.)
    162Er 0.14 8.8 0 9.7 0 9.7 19.(2.)
    164Er 1.56 8.2 0 8.4 0 8.4 13.(2.)
    166Er 33.4 10.6 0 14.1 0 14.1 19.6(1.5)
    167Er 22.9 3.0 1.0 1.1 0.13 1.2 659.(16.)
    168Er 27.1 7.4 0 6.9 0 6.9 2.74
    170Er 14.9 9.6 0 11.6 0 11.6(1.2) 5.8
    Tm 100 7.07 0.9 6.28 0.1 6.38 100.(2.)
    Yb --- 12.43 --- 19.42 4 23.4 34.8
    168Yb 0.14 -4.07-0.62i 0 2.13 0 2.13 2230.(40.)
    170Yb 3.06 6.77 0 5.8 0 5.8 11.4(1.0)
    171Yb 14.3 9.66 -5.59 11.7 3.9 15.6 48.6(2.5)
    172Yb 21.9 9.43 0 11.2 0 11.2 0.8
    173Yb 16.1 9.56 -5.3 11.5 3.5 15 17.1(1.3)
    174Yb 31.8 19.3 0 46.8 0 46.8 69.4(5.0)
    176Yb 12.7 8.72 0 9.6 0 9.6 2.85
    Lu --- 7.21 --- 6.53 0.7 7.2 74.(2.)
    175Lu 97.39 7.24 (+/-)2.2 6.59 0.6 7.2 21.(3.)
    176Lu 2.61 6.1-0.57i (+/-)3.0+0.61i 4.7 1.2 5.9 2065.(35.)
    Hf --- 7.7 --- 7.6 2.6 10.2 104.1
    174Hf 0.2 10.9(1.1) 0 15.(3.) 0 15.(3.) 561.(35.)
    176Hf 5.2 6.61 0 5.5 0 5.5 23.5(3.1)
    177Hf 18.6 0.8(1.0) (+/-)0.9(1.3) 0.1 0.1 0.2 373.(10.)
    178Hf 27.1 5.9 0 4.4 0 4.4 84.(4.)
    179Hf 13.7 7.46 (+/-)1.06 7 0.14 7.1 41.(3.)
    180Hf 35.2 13.2 0 21.9 0 21.9(1.0) 13.04
    Ta --- 6.91 --- 6 0.01 6.01 20.6
    180Ta 0.012 7.(2.) --- 6.2 0.5 7.(4.) 563.(60.)
    181Ta 99.988 6.91 -0.29 6 0.011 6.01 20.5
    W --- 4.86 --- 2.97 1.63 4.6 18.3
    180W 0.1 5.(3.) 0 3.(4.) 0 3.(4.) 30.(20.)
    182W 26.3 6.97 0 6.1 0 6.1 20.7
    183W 14.3 6.53 --- 5.36 0.3 5.7 10.1
    184W 30.7 7.48 0 7.03 0 7.03 1.7
    186W 28.6 -0.72 0 0.065 0 0.065 37.9
    Re --- 9.2 --- 10.6 0.9 11.5 89.7(1.)
    185Re 37.4 9.0 (+/-)2.0 10.2 0.5 10.7 112.(2.)
    187Re 62.6 9.3 (+/-)2.8 10.9 1 11.9 76.4(1.)
    Os --- 10.7 --- 14.4 0.3 14.7 16
    184Os 0.02 10.(2.) 0 13.(5.) 0 13.(5.) 3000.(150.)
    186Os 1.58 11.6(1.7) 0 17.(5.) 0 17.(5.) 80.(13.)
    187Os 1.6 10.(2.) --- 13.(5.) 0.3 13.(5.) 320.(10.)
    188Os 13.3 7.6 0 7.3 0 7.3 4.7
    189Os 16.1 10.7 --- 14.4 0.5 14.9 25.(4.)
    190Os 26.4 11.0 0 15.2 0 15.2 13.1
    192Os 41 11.5 0 16.6 0 16.6(1.2) 2
    Ir --- 10.6 --- 14.1 0.(3.) 14.(3.) 425.(2.)
    191Ir 37.3 --- --- --- --- --- 954.(10.)
    193Ir 62.7 --- --- --- --- --- 111.(5.)
    Pt --- 9.60 --- 11.58 0.13 11.71 10.3
    190Pt 0.01 9.0 0 10.(2.) 0 10.(2.) 152.(4.)
    192Pt 0.79 9.9 0 12.3(1.2) 0 12.3(1.2) 10.0(2.5)
    194Pt 32.9 10.55 0 14 0 14 1.44
    195Pt 33.8 8.83 -1.00 9.8 0.13 9.9 27.5(1.2)
    196Pt 25.3 9.89 0 12.3 0 12.3 0.72
    198Pt 7.2 7.8 0 7.6 0 7.6 3.66
    Au 100 7.63 -1.84 7.32 0.43 7.75 98.65
    Hg --- 12.692 --- 20.24 6.6 26.8 372.3(4.0)
    196Hg 0.2 30.3(1.0) 0 115.(8.) 0 115.(8.) 3080.(180.)
    198Hg 10.1 --- 0 --- 0 --- 2
    199Hg 17 16.9 (+/-)15.5 36.(2.) 30.(3.) 66.(2.) 2150.(48.)
    200Hg 23.1 --- 0 --- 0 --- <60.
    201Hg 13.2 --- --- --- --- --- 7.8(2.0)
    202Hg 29.6 --- 0 --- 0 9.828 4.89
    204Hg 6.8 --- 0 --- 0 --- 0.43
    Tl --- 8.776 --- 9.678 0.21 9.89 3.43
    203Tl 29.524 6.99 1.06 6.14 0.14 6.28 11.4
    205Tl 70.476 9.52 -0.242 11.39 0.007 11.4 0.104
    Pb --- 9.405 --- 11.115 0.003 11.118 0.171
    204Pb 1.4 9.90 0 12.3 0 12.3 0.65
    206Pb 24.1 9.22 0 10.68 0 10.68 0.03
    207Pb 22.1 9.28 0.14 10.82 0.002 10.82 0.699
    208Pb 52.4 9.50 0 11.34 0 11.34 0.00048
    Bi 100 8.532 --- 9.148 0.0084 9.156 0.0338
    Po --- --- 0.259 0 --- --- ---
    At --- --- --- 0 --- --- ---
    Rn --- --- --- 0 --- 12.6 ---
    Fr --- --- --- 0 --- --- ---
    Ra (1.60E3 a) 10.0(1.0) 0 13.(3.) 0 13.(3.) 12.8(1.5)
    Ac --- --- --- 0 --- --- ---
    Th 100 10.31 0 13.36 0 13.36 7.37
    Pa (3.28E4 a) 9.1 --- 10.4 0.1(3.3) 10.5(3.2) 200.6(2.3)
    U --- 8.417 --- 8.903 0.005 8.908 7.57
    233U (1.59E5 a) 10.1 (+/-)1.(3.) 12.8 0.1 12.9 574.7(1.0)
    234U 0.005 12.4 0 19.3 0 19.3 100.1(1.3)
    235U 0.72 10.47 (+/-)1.3 13.78 0.2 14 680.9(1.1)
    238U 99.275 8.402 0 8.871 0 8.871 2.68
    Np (2.14E6 a) 10.55 --- 14 0.5 14.5 175.9(2.9)
    Pu --- --- --- --- --- --- ---
    238Pu (87.74 a) 14.1 0 25.0(1.8) 0 25.0(1.8) 558.(7.)
    239Pu (2.41E4 a) 7.7 (+/-)1.3(1.9) 7.5 0.2 7.7 1017.3(2.1)
    240Pu (6.56E3 a) 3.5 0 1.54 0 1.54 289.6(1.4)
    242Pu (3.76E5 a) 8.1 0 8.2 0 8.2 18.5
    Am (7.37E3 a) 8.3 (+/-)2.(7.) 8.7 0.3 9.0(2.6) 75.3(1.8)
    Cm --- --- --- 0 --- --- ---
    244Cm (18.10 a) 9.5 0 11.3 0 11.3 16.2(1.2)
    246Cm (4.7E3 a) 9.3 0 10.9 0 10.9 1.36
    248Cm (3.5E5 a) 7.7 0 7.5 0 7.5 3

    Last Modified 23, November 1999

    These data were entered by hand from the above cited paper. As such some errors may exist. Report errors or make inquiries to Alan Munter, <alan.munter@nist.gov>

    Last modified 30-January-2003

    Boltzmann, il vero padre della neutronica ( l'equazione del trasporto ) http://fr.wikipedia.org/wiki/Neutronique

    Giampaolo Bottoni
    gpbottoni@gmail.com