Count the number of TOTAL number of atoms in each compound listed below.

Question

Na2(SO4)2

a.16 total atoms
b.12 total atoms
c.4 total atoms
d.7 total atoms
e.3 total atoms
f.15 total atoms

Answer 1

The correct answer is f. 15 total atoms.

In Na2(SO4)2, there are 2 sodium atoms (2 Na), 1 sulfur atom (1 S), and 8 oxygen atoms (4 O). Therefore, the total number of atoms is 2 + 1 + 8 = 15.