Element Group
Calcium
Alkaline Earth Metals
Hydrogen
1
Carbon
6
Helium Neutrons
2
CaCO2
Calcium, Carbon, Oxygen
Tin
Post-Transition Metals
Platinum
78
Sulfur
16
Aluminum Neutrons
13
H2SO4
Hydrogen, Sulfur, Oxygen
Cesium
Alkali Metals
Xenon
54
Radium
88
Mercury Neutrons
120
C12H22O11
Carbon, Hydrogen, Oxygen
Promethium
Lanthanoids
Uranium
92
Astatine
85
Radium Neutrons
138
AgNO3
Silver, Nitrogen, Oxygen
Oganesson
Noble Gases
Copernicium
112
Tungsten
74
Bismuth
125
Au3IBr2Cl
Gold, Iodine, Bromine, Chlorine