Periodic Table
70
Yb
173.05
Ytterbium
Lanthanoid4f¹⁴ → stable +2; atomic clocks.
Electronic Configuration
[Xe] 4f¹⁴ 6s²or1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 4f¹⁴ 6s²
Electron shells
2e⁻n=1
8e⁻n=2
18e⁻n=3
32e⁻n=4
8e⁻n=5
2e⁻n=6
Properties
Atomic number
70
Atomic mass
173.05 u
Category
Lanthanoid
Block / Group / Period
f · — · 6
Valence electrons
2
Oxidation states
+2, +3
Electronegativity
1.1
Atomic radius
222 pm
Ionization energy
603 kJ/mol
Electron affinity
50 kJ/mol
Melting point
1097 K / 824 °C
Boiling point
1469 K / 1196 °C
Density
6.965 g/cm³
State at 25 °C
solid
Personal Notes
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