1

H

Hydrogen
1.008
 Historical Information

Robert Boyle (1627-1691; English chemist and physicist) published a paper ("New experiments touching the relation betwixt flame and air") in 1671 in which he described the reaction between iron filings and dilute acids which results in the evolution of gaseous hydrogen ("inflammable solution of Mars" [iron]).
Basic Information Shells
  • Name: Hydrogen
  • Symbol: H
  • Atomic number: 1
  • Atomic weight: 1.00794 (7)
  • Standard state: gas at 298 K
  • Group in periodic table: 1
  • Group name: (none)
  • Period in periodic table: 1
  • Block in periodic table: s-block
  • Classification: Non-metallic
 hydrogen
Uses Trivia
  • hydrogenation of fats and oils
  • methanol production
  • rocket fuel

Hydrogen is the lightest element. It is by far the most abundant element in the universe and makes up about about 90% of the universe by weight.