Name: Hydrogen Symbol: H Atomic Number: 1 Atomic Mass: 1.00794 amu Number of Protons/Electrons: 1 Number of Neutrons: 0 Date of Discovery: 1766 Discoverer: Henry Cavendish Uses: Balloons, metal refining Classification: Non-metal
Nitrogen
Name: Nitrogen Symbol: N Atomic Number: 7 Atomic Mass: 14.00674 amu Number of Protons/Electrons: 7 Number of Neutrons: 7 Date of Discovery: 1772 Discoverer: Daniel Rutherford Uses: forms most of atmosphere Classification: Non-metal
Phosphorus
Name: Phosphorus Symbol: P Atomic Number: 15 Atomic Mass:
30.97376 amu Number of Protons/Electrons: 15 Number of Neutrons: 16 Date of Discovery: 1669 Discoverer: Hennig Brand Uses: fertilizers, detergents Classification: Non-metal
Selenium
Name: Selenium Symbol: Se Atomic Number: 34 Atomic Mass: 78.96 amu Number of Protons/Electrons: 34 Number of Neutrons: 45 Date of Discovery: 1817 Discoverer: Jons Berzelius Uses: photoelectric cells, TV cameras Classification: Non-metal
Carbon
Name: Carbon Symbol: C Atomic Number: 6 Atomic Mass: 12.0107 amu Number of Protons/Electrons: 6 Number of Neutrons: 6 Date of Discovery: Known to the ancients Discoverer: Unknown Uses: steel, filters Classification: Non-metal
Oxygen
Name: Oxygen Symbol: O Atomic Number: 8 Atomic Mass: 15.9994 amu Number of Protons/Electrons: 8 Number of Neutrons: 8 Date of Discovery: 1774 Discoverer: Joseph Priestly Uses: supports life Classification: Non-metal
Sulfur
Name: Sulfur Symbol: S Atomic Number: 16 Atomic Mass: 32.066 amu Number of Protons/Electrons: 16 Number of Neutrons: 16 Date of Discovery: Known to the ancients Discoverer: Unknown Uses: matches, gunpowder, medicines Classification: Non-metal