Column1
Radon
What is Rn
Lead
What is Pb
Phosphorus
What is P
Magnesium
What is g
Fluorine
What is F
Mercury
What is Hg
Plutonium
What is Pu
Sodium
What is Na
Oxegen
What is O
Boron
What is B
Xenon
What is Xe
Silicon
What is Si
Nitrogen
What is N
Lithium
What is Li
Selenium
What is Se
Cadmium
What is Cd
Carbon
What is C
Helium
What is He
Chlorine
What is Cl
Nickel
What is Ni
Cesium
What is Cs
Hydrogen
What is H
Sulfur
What is S
Aluminum
What is Al
Neodymium
What is Nd