Chemical element

Hydrogen (H, 1) List of chemical elements 111 13

Helium (He, 2) List of chemical elements 104 6

Carbon (C, 6) List of chemical elements 100 20

Carbon isotope Carbon 5
Carbon compound Carbon 100 13
- Allotrope of carbon Carbon compound 100 6
- Carbonate ( $C O_{3}^{2 -}$ ) Carbon compound 5
  - Calcium carbonate ( $C a C O_{3}$ ) Carbonate 4
    - Calcium carbonate polymorph Calcium carbonate 3

Nitrogen (N, 7) List of chemical elements 91 3

Oxygen (O, 8) List of chemical elements 6 2

Oxygen compound Oxygen 6 1
- Quartz ( $S i O_{2}$ ) Oxygen compound 6

Sodium (Na, 11) List of chemical elements 1

Sodium chloride (NaCl) Sodium

Aluminium (Al, 13) List of chemical elements 1

Superconducting temperature of aluminum (1.2 kelvin) Aluminium

Phosphorus (P, 15, 3s2 3d3) List of chemical elements 2

Sulfur (S, 16) List of chemical elements 26 2

Sulfur compound Sulfur 26 1
- Sulfur hydrade ( $H_{2} O$ ) Sulfur compound 26

Argon (Ar, 18) List of chemical elements 21 4

Titanium (Ti, 22) List of chemical elements 2

Titanium compound Titanium 1
- Niobium-Titanium (Nb-Ti) Titanium compound

Iron (Fe, 26) List of chemical elements 39 2

Fe-C Iron 30
Steel (Fe-C) Iron 9

Cobalt (Co, 27) List of chemical elements 2

Cobalt isomer Cobalt 1
- Cobalt-60 Cobalt isomer

Copper (Cu, 29) List of chemical elements 1

Copper compound Copper

Gallium (Ga, 31) List of chemical elements 99 3

Gallium compound Gallium 99 2
- Gallium arsenide Gallium compound 99 1
  - Gallium arsenide vs silicon (GaAs) Gallium arsenide 82

Arsenide (As, 33) List of chemical elements 1

Arsenide compound Arsenide

Bromine (Br, 35, 4s2 4p5) List of chemical elements 3

Bromide ( $B r^{-}$ ) Bromine 2
- Organic bromide compound Bromide 1
  - Ethidium bromide Organic bromide compound

Niobium (Nb, 41) List of chemical elements 6 2

Tin (Sn, 50, Stannum) List of chemical elements 1

Tin compound Tin

Caesium (Cs, 55,

6 s^{1}

) List of chemical elements 138 3

Barium (Ba, 56,

6 s^{2}

) List of chemical elements 1

Barium compound Barium

Gold (Au, 79) List of chemical elements 7 1

Gold leaf Gold 7

Bismuth (Bi, 83) List of chemical elements 1

Bismuth compound Bismuth

Polonium (Po, 84, July 1998) List of chemical elements 62 4

Polonium isotope Polonium 56 3

Radium (Ra, 88, December 1989) List of chemical elements 60 1

Radium Girls Radium

Thorium (Th, 90) List of chemical elements 12 5

Uranium (U, 92) List of chemical elements 151 15

Plutonium (Pu, 94) List of chemical elements 200 7

 Ancestors (4)

 Incoming links (2)