what is the formula for calcium and oxygen
The elements themselves are Ca and O.
The naturally occuring form of free gaseous oxygen is O2.
Calcium (by itself) is a solid, and is written Ca, but it combines with both O2 and N2 in air.
The naturally occuring form of free gaseous oxygen is O2.
Calcium (by itself) is a solid, and is written Ca, but it combines with both O2 and N2 in air.