Yttrium
Symbol
Y
Atomic Number
39
Atomic Weight
88.90585
Element Classification
Discovered By
Johann Gadolin
Discovery Date
1789 (Finland)
Name Origin
The Swedish village, Ytterby, where one of its minerals was first found.
Density (g/cc)
4.47
Melting Point (K)
1795
Boiling Point (K)
3611
Appearance
Silvery, ductile, fairly reactive metal
Atomic Radius (pm)
178
Atomic Volume (cc/mol)
19.8
Covalent Radius (pm)
162
Ionic Radius
89.3 (+3e)
Specific Heat
0.284
Fusion Heat (kJ/mol)
11.5
Evaporation Heat (kJ/mol)
367
Thermal Conductivity (@25°C W/m K)
(17.2)
Debye Temperature (K)
n/a
Pauling Negativity Number
1.22
First Ionizing Energy (kJ/mol)
615.4
Oxidation States
3
Electronic Configuration
[Kr] 4d1 5s2
Lattice Structure
Hexagonal(HEX)
Lattice Constant
3.650
Lattice C/A Ratio
1.571
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