Question

How many atoms of each element are in the following?
a. CH4
b. Mg3(PO4)2

Answer 1

a). 5 atoms

b). 13 atoms

Step-by-step explanation:

Atoms: It is the smallest unit of the element.

Atomicity : Total number of atoms present in the molecule. For e.g each molecule of
`N_(2)` gas contain 2 atoms of nitrogen.

`CH_(4)` = 1 atom of C + 4 atoms of H

= 5 atoms

`Mg_(3)(PO_(4))_(2)`

= 3 atoms of Mg + (1 atom of P + 4 atoms of O )
`*2`

= 3 +5
`* 2`

= 3 + 10

= 13 atoms