the four elements are
1. air
2. water
3. fire
4 earth
WHAT ARE THE ELMENTS IN KA13Si3013
by their atomic number
15
Actinides family
by the elments an protons
Calcium, carbon and oxygen
the periodic table has all the elments
alcohols carbohydrates sugars
nitrogen and oxygen in NO2
How are elements described in terms of their atoms
Mg2+ and Ca2+ (and many more!)
They are only two Mercury and Bromine.