Name: Helium Symbol: He Atomic Number: 2 Atomic Mass: 4.002602 amu Number of Protons/Electrons: 2 Number of Neutrons: 2 Date of Discovery: 1895 Discoverer: Sir William Ramsay Uses: balloons, deep sea diving Classification: Noble Gas
Argon
Name: Argon Symbol: Ar Atomic Number: 18 Atomic Mass: 39.948 amu Number of Protons/Electrons: 18 Number of Neutrons: 22 Date of Discovery: 1894 Discoverer: Sir William Ramsay Uses: Lighting Classification: Noble Gas
Xenon
Name: Xenon Symbol: Xe Atomic Number: 54 Atomic Mass: 131.29 amu Number of Protons/Electrons: 54 Number of Neutrons: 77 Date of Discovery: 1898 Discoverer: Sir William Ramsay Uses: powerful lamps, bubble chambers Classification: Noble Gas
Neon
Name: Neon Symbol: Ne Atomic Number: 10 Atomic Mass: 20.1797 amu Number of Protons/Electrons: 10 Number of Neutrons: 10 Date of Discovery: 1898 Discoverer: Sir William Ramsay Uses: lighting Classification: Noble Gas
Name: Krypton Symbol: Kr Atomic Number: 36 Atomic Mass: 83.8 amu Number of Protons/Electrons: 36 Number of Neutrons: 48 Date of Discovery: 1898 Discoverer: Sir William Ramsay Uses: Lighting Classification: Noble Gas
Radon
Name: Radon Symbol: Rn Atomic Number: 86 Atomic Mass: (222.0) amu Number of Protons/Electrons: 86 Number of Neutrons: 136 Date of Discovery: 1898 Discoverer: Fredrich Ernst Dorn Uses: treatment of cancer Classification: Noble Gas