Atomic Element Z = 70 • Lanthanide
Ytterbium (Yb) — Atomic Data, Electron Shells & Reactions
Ytterbium (symbol Yb, atomic number 70) has a standard atomic weight of 173.05 u and ground-state configuration [Xe] 4f14 6s2.
Atomic Number (Z)
70
IUPAC Symbol
Yb
Standard Atomic Weight
173.05 g/mol
Period / Group / Block
6 / f-block / f-block
Condensed Electron Config
[Xe] 4f14 6s2
Full Subshell Config
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 6s2
Principal Shell Occupancy
[2, 8, 18, 32, 8, 2]
Pauling Electronegativity
1.1
First Ionization Energy
603 kJ/mol
Covalent Radius
187 pm
Melting Point
1097 K (823.85 °C)
Boiling Point
1469 K (1195.85 °C)
Density
6.965 g/cm³
Oxidation States
+3, +2
Yb (Z=70) — Valence shell highlighted in vermilion