70 2 · 8 · 18 · 32 · 8 · 2

Ytterbium, Yb, element 70

Lanthanide· Period 6· f-block

Configuration [Xe]4f146s2

Atomic weight
173.045Da
Phase
solid
Density
6.9g/cm³
Melting point
1,097.15K 824 °C
Boiling point
1,469.15K 1,196 °C
Electronegativity
1.1

Silvery metallic element of the lanthanoids. Seven natural isotopes and ten artificial isotopes are known. Used in certain steels. Discovered by J.D.G. Marignac in 1878. Description from mendeleev.

Back to the table
The outermost shell: the valence electronsThe inner shellsThe nucleus One bead for each electron, on the ring of its shell, counted from the nucleus out. The rings turn at their own pace; the model is Bohr's picture of the atom, which places electrons in shells but not on true orbits.

Atomic properties

5 of 5 fields have a value for ytterbium

Atomic weight The standard atomic weight. For an element with no stable isotope, the mass of its longest-lived isotope.
173.045Da
Source: mendeleev
Electron configuration
[Xe]4f146s2
Source: mendeleev
Uncertainty of the atomic weight
0.01Da
Source: mendeleev
Electron configuration in full The electron configuration with the noble-gas core written out.
1s22s22p63s23p63d104s24p64d104f145s25p66s2
Source: Worked outfrom electron configuration
Electrons in each shell Counted from the electron configuration, from the first shell outward.
2 · 8 · 18 · 32 · 8 · 2
Source: Worked outfrom electron configuration

Screening of each subshell

Clementi's screening constants: how much of the nucleus's charge the other electrons hide from an electron in each subshell. What is left is the effective nuclear charge it feels.

SubshellScreening σEffective charge Z − σ
1s1.361168.6389
2s18.30651.694
2p4.371665.6284
3s21.239848.7602
3p20.663549.3365
3d13.603356.3967
4s32.482437.5176
4p33.59836.402
4d36.410433.5896
4f40.56829.432
5s49.8520.15
5p52.168517.8315
6s61.40688.5932