Atomic number 39
Name Yttrium
Atomic mass 88.90585(2)
Electronic configuration [Kr] 4d1 5s2
Electronegativity 1.22
Atomic radius 162 pm
Ion radius 90 (+3) pm
Van der Waals radius pm
Ionization energy 600 kJ/mol
Electron affinity -30 kJ/mol
Oxidation states 1, 2, 3
Standard physical state solid
Bonding type metallic
Melting point 1799 °C
Boiling point 3618 °C
Density 4.472 g/cm³
Type transition metal
Year discovered 1794