![[ATOM]](atom.gif) |
Yttrium
|
|
Information valid for Y-89 unless otherwise noted
Basic Information
Symbol: Y
Atomic Number: 39
Mass: 88.90585
Melting Point: 1523.0 C
Boiling Point: 3337.0 C
Number of Protons/Electrons: 39
Number of Neutrons: 50
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 4.469 g/cm3
Color: silvery
Atomic Structure
![[Bohr Model of Yttrium]](b0039.gif) |
|
Number of Energy Levels: 5
First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 18
Fourth Energy Level: 9
Fifth Energy Level: 2
|
Isotopes
| Isotope |
Half Life |
| Y-86 |
14.74 hours |
| Y-87 |
3.35 days |
| Y-88 |
106.6 days |
| Y-89 |
Stable |
| Y-90 |
2.67 days |
| Y-90m |
3.19 hours |
| Y-91 |
58.51 days |
| Y-91m |
49.71 minutes |
| Y-92 |
3.54 hours |
| Y-93 |
10.2 hours |
Facts
Date of Discovery: 1794
Discoverer: Johann Gadolin
Name Origin: After Ytterby (a town in Sweden)
Uses: color TV's, radars
Obtained From: monazite, xenotime, yettriac