• H

    1

    H

    Hydrogen
    1.00794(7)

    		   He
    Li

    3

    Li

    Lithium
    6.931

    		 Be   B C

    6

    C

    Carbon
    12.0107

    		 N

    7

    N

    Nitrogen
    14.00674

    		 O

    8

    O

    Oxygen
    15.9994

    		 F Ne

    10

    Ne

    Neon
    20.1797
    Na

    11

    Na

    Sodium
    22.98976928(2)

    		 Mg   Al Si P S Cl Ar
    K

    19

    K

    Potassium
    39.0983(1)

    		 Ca

    20

    Ca

    Calcium
    40.078

    		 Sc Ti V Cr Mn Fe

    26

    Fe

    Iron
    55.845(2)

    		 Co Ni

    28

    Ni

    Nickel
    58.6934(4)(2)

    		 Cu Zn

    30

    Zn

    Zinc
    65.38(2)(4)

    		 Ga Ge As Se Br Kr
    Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
    Cs Ba   Hf Ta W Re Os Ir Pt Au

    79

    Au

    Gold
    196.9665

    		 Hg Tl Pb Bi Po At Rn

    86

    Rn

    Radon
    222
    Fr Ra  
      La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
      Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
    Hover over highlighted elements for more details


    Don't smoke near hydrogen!

    Hydrogen

    What’s the #1 most common element in the universe? Hydrogen!

    • Atomic Number: 1
    • Symbol: H
    • Atomic Weight: 1.00794(7)
    • Discovery: In 1766, Henry Cavendish discovered the flammable gas we know as hydrogen, but it wasn’t given that name until 1783, when Antoine Lavoiser further explored the element.
    • Appearance: Colourless, odourless, tasteless gas at room temperature, non-toxic, but highly combustible.
    • Category: Non-metal.
    • Group / Period / Block: 1 / 1 / s

    Properties

    Hydrogen gas is highly flammable.

    Hydrogen is the most abundant chemical element in the universe.

    Hydrogen is the simplest atom known. It has one proton and one electron.

    Uses

    Liquid hydrogen can be used as rocket fuel.

    It is also lighter than air, and was once used to float vast airships. One of these was called the Hindenburg, and it carried passengers between Germany and the US. It caught fire in 1937 killing 36 people.

    Hydrogen is used in nickel hydrogen batteries, and these are used in space probes.