Group+18Hr6

NOBLE GASES The Noble Gases are the elements that lie in Group 18, and they include Helium, Neon, Argon, Krypton, Xenon and Radon. The elements in this family have a full outer shell, so they do not have the ability to react with any other elements. They are odorless and colorless, and are often used for artificial lights because of the multitude of colors they can show when burned. They are non-metals so they conduct heat and electricity very poorly. They can be radioactive, an example being Radon. -Xenon Xe 54 -Radon Rn 86

**Helium:** **Name:** Helium **Number of Electrons:** 2 **Number of Neutrons:** 2 **Neon:** **Name:** Neon **Number of Electrons:** 10 **Number of Neutrons:** 10
 * Symbol:** He
 * Atomic Number:** 2
 * Atomic Mass:** 4.002602 amu
 * Number of Protons:** 2
 * Symbol:** Ne
 * Atomic Number:** 10
 * Atomic Mass:** 20.1797 amu
 * Number of Protons:** 10

**Name:** Argon **Number of Electrons:** 18
 * Argon: **
 * Symbol:** Ar
 * Atomic Number:** 18
 * Atomic Mass:** 39.948 amu
 * Number of Protons:** 18
 * Number of Neutrons:** 22

**Name:** Krypton **Number of Electrons:** 36 **Number of Neutrons:** 48
 * Krypton: **
 * Symbol:** Kr
 * Atomic Number:** 36
 * Atomic Mass:** 83.8 amu
 * Number of Protons:** 36