![[ATOM]](atom.gif) |
Zirconium
|
|
Information valid for Zr-91 unless otherwise noted
Basic Information
Symbol: Zr
Atomic Number: 40
Mass: 91.224
Melting Point: 1852.0 C
Boiling Point: 4377.0 C
Number of Protons/Electrons: 40
Number of Neutrons: 51
Classification: Transition Metal
Crystal Structure: Hexagonal
Density @ 293 K: 6.49 g/cm3
Color: Grayish
Atomic Structure
![[Bohr Model of Zirconium]](b0040.gif) |
|
Number of Energy Levels: 5
First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 18
Fourth Energy Level: 10
Fifth Energy Level: 2
|
Isotopes
| Isotope |
Half Life |
| Zr-86 |
16.5 hours |
| Zr-88 |
83.4 days |
| Zr-89 |
3.27 days |
| Zr-90 |
Stable |
| Zr-91 |
Stable |
| Zr-92 |
Stable |
| Zr-93 |
1530000.0 years |
| Zr-94 |
Stable |
| Zr-95 |
64.02 days |
| Zr-96 |
Stable |
| Zr-97 |
16.9 hours |
Facts
Date of Discovery: 1789
Discoverer: Martin Klaproth
Name Origin: zircon (mineral)
Uses: nuclear applications
Obtained From: zircon, baddeleyite