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Elemental Data
| Element |
|
Yb |
| Atomic Number |
|
70 |
| Atomic Weight |
|
173.04(3) |
| Ionization Energy |
|
6.2542 eV |
| Boiling Point |
|
1660 K |
| Melting Point |
|
1097 K |
| Density |
|
6.965 g/cm3 |
|
|
Isotope |
|
abundance ratio |
atomic mass |
I |
magnetic moment |
|
168Yb = 0.13 % |
167.933895 |
0 |
|
|
170Yb = 3.05 % |
169.934759 |
0 |
|
|
171Yb = 14.3 % |
170.936323 |
1/2 |
+0.4919 |
|
172Yb = 21.9 % |
171.936378 |
0 |
|
|
173Yb = 16.12 % |
172.938207 |
5/2 |
-0.6776 |
|
174Yb = 31.8 % |
173.938858 |
0 |
|
|
176Yb = 12.7 % |
175.942569 |
0 |
|
Spectroscopic Data
Energy Level
| Configuration |
Term |
J |
Energy Level (cm-1) |
Lande g-factor |
| 4f14(1S)6s2 |
1S |
0 |
0.000 |
|
| 4f14(1S)6s6p |
3Po |
0 |
17 288 .439 |
|
| 1 |
17 992 .007 |
1.49282 |
| 2 |
19 710 .388 |
1.50 |
| 4f14(1S)5d6s |
3D |
1 |
24 489 .102 |
0.50 |
| 2 |
24 751 .948 |
1.16 |
| 3 |
25 270 .902 |
1.34 |
| 4f14(1S)6s6p |
1Po |
1 |
25 068 .222 |
1.035 |
| 4f14(1S)5d6s |
1D |
2 |
27 677 .665 |
1.01 |
| 4f14(1S)6s7s |
3S |
1 |
32 694 .692 |
2.01 |
Line Data
| Transition |
Wavelength in air (nm) |
Lower Level (cm-1) |
Upper Level (cm-1) |
Aki (108 s-1) |
fki |
| 1S0 - 1P1 |
398.7986 |
0.000 |
25 068 .222 |
1.76e+00 |
1.26e+00 |
| 1S0 - 3P1 |
555.6481 |
0.000 |
17 992 .007 |
1.14e-02 |
1.58e-02 |
| 3P0 - 3S1 |
648.9078 |
17 288 .439 |
32 694 .692 |
4.6e-02 |
|
| 3P1 - 3S1 |
679.9602 |
17 992 .007 |
32 694 .692 |
1.4e-01 |
|
| 3P2 - 3S1 |
769.9487 |
19 710 .388 |
32 694 .692 |
2.1e-01 |
|
See also "NIST Atomic Spectra Database" .
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