Y
Yttrium
Z 39 88.906 g/molTransition Metal
Nucleus
39 Protons
50 Neutrons
39 Electrons (3 Valence)
Shell distribution: K2 • L8 • M18 • N9 • O2 • P0 • Q0
Electron Configuration
Energy
7p
6d
5f
7s
6p
5d
4f
6s
5p
4d
5s
4p
3d
4s
3p
3s
2p
2s
1s
[Kr]4d15s2
Oxidation States
CommonRare
0
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Radii
Empirical
180 pm1.8 Å
Calculated
212 pm2.12 Å
Covalent
190±7 pm1.9±0.07 Å
Van der Waals
219 pm2.19 Å
IonicY3+
90 pm0.9 Å
Crystal Structure
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Hexagonal close-packedStandard state
Pearson symbol
hP2
Space group
P63/mmc No. 194
Density
4.472 g/cm³