Atomic Element Z = 39 • Transition Metal
Yttrium (Y) — Atomic Data, Electron Shells & Reactions
Yttrium (symbol Y, atomic number 39) has a standard atomic weight of 88.906 u and ground-state configuration [Kr] 4d1 5s2.
Atomic Number (Z)
39
IUPAC Symbol
Y
Standard Atomic Weight
88.906 g/mol
Period / Group / Block
5 / 3 / d-block
Condensed Electron Config
[Kr] 4d1 5s2
Full Subshell Config
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d1 5s2
Principal Shell Occupancy
[2, 8, 18, 9, 2]
Pauling Electronegativity
1.22
First Ionization Energy
600 kJ/mol
Covalent Radius
190 pm
Melting Point
1799 K (1525.85 °C)
Boiling Point
3609 K (3335.85 °C)
Density
4.469 g/cm³
Oxidation States
+3
Y (Z=39) — Valence shell highlighted in vermilion