Periodic Table
39
Y
88.906
Yttrium
Transition MetalUsed in YBCO superconductors and phosphors.
Electronic Configuration
[Kr] 4d¹ 5s²or1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 4d¹ 5s²
Electron shells
2e⁻n=1
8e⁻n=2
18e⁻n=3
9e⁻n=4
2e⁻n=5
Properties
Atomic number
39
Atomic mass
88.906 u
Category
Transition Metal
Block / Group / Period
d · 3 · 5
Valence electrons
2
Oxidation states
+3
Electronegativity
1.22
Atomic radius
212 pm
Ionization energy
600 kJ/mol
Electron affinity
30 kJ/mol
Melting point
1799 K / 1526 °C
Boiling point
3609 K / 3336 °C
Density
4.469 g/cm³
State at 25 °C
solid
Personal Notes
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