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70Yb173.045
Ytterbium
LanthanideYtterbium is a chemical element with symbol Yb and atomic number 70. It is the fourteenth and penultimate element in the lanthanide series, which is the basis of the relative stability of its +2 oxidation state. However, like the other lanthanides, its most common oxidation state is +3, seen in its oxide, halides and other compounds.
Phase: Solid
2, 8, 18, 32, 8, 2
Physical Properties
Atomic Mass173.0451 u
Density6.9 g/cm³
Melting Point1097 K
Boiling Point1469 K
Molar Heat26.74 J/(mol·K)
Period6
PhaseSolid
Chemical Properties
Electron Configuration1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14
Semantic Config[Xe] 4f14 6s2
Shells2, 8, 18, 32, 8, 2
Electron Affinity-1.93 kJ/mol
Electronegativity1.1
Ionization Energies
IE1: 603.4 kJ/molIE2: 1174.8 kJ/molIE3: 2417 kJ/molIE4: 4203 kJ/mol
Discovery
Discovered byJean Charles Galissard de Marignac