most abundant element in the Earth's atmosphere
Nitrogen is fixed
No. Nitrogen is not a metal at all but rather a nonmetal.
Nitrogen gas or N2 covers the atmosphere of Earth for about 78% because Oxygen gas or O2 for about 21%and the remaining percentage that is 1%goes to other gases like carbon dioxide or CO2 ,Argon gas...
The average relative abundance of iodine in earth's crustal rocks is 80 ppb, count of atoms, or 490 ppb by weight.
Nitrogen is needed for everything to grow well. It is essentially a building block for proteins.