Name: Xenon
Symbol: Xe
Atomic Number: 54
Atomic Mass: 131.29 amu
Melting Point: -111.9 °C (161.25 °K, -169.42 °F)
Boiling Point: -108.1 °C (165.05 °K, -162.58 °F)
Number of Protons/Electrons: 54
Number of Neutrons: 77
Crystal Structure: Cubic
Density @ 293 K: 5.8971 g/cm3
Color: Colorless Gas
Atomic Structure
![[Bohr Model of Xenon]](b0054.gif) |
Number of Energy Levels: 5 First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 18 Fourth Energy Level: 18 Fifth Energy Level: 8 |
Isotopes
| Isotope | Half Life |
| Xe-122 | 20.1 hours |
| Xe-123 | 2.0 hours |
| Xe-124 | Stable |
| Xe-125 | 17.1 hours |
| Xe-126 | Stable |
| Xe-127 | 36.41 days |
| Xe-128 | Stable |
| Xe-129 | Stable |
| Xe-129m | 8.89 days |
| Xe-130 | Stable |
| Xe-131 | Stable |
| Xe-131m | 4.9 days |
| Xe-132 | Stable |
| Xe-133 | 5.24 days |
| Xe-133m | 2.19 days |
| Xe-134 | Stable |
| Xe-135 | 9.1 hours |
| Xe-135m | 15.36 minutes |
| Xe-136 | Stable |
| Xe-137 | 3.82 minutes |
| Xe-138 | 14.13 minutes |
Facts
Date of Discovery: 1898Discoverer: Sir William Ramsay
Name Origin: From the Greek word xenon (stranger)
Uses: powerful lamps, bubble chambers
Obtained From: liquid air
Information provided by: http://www.chemicalelements.com