Question

Which of these molecules is composed of EXACTLY 5 atoms?

a. NaHCO3

b. Ba(OH)2

c. K2SO4

d. N2O5

Answer 1

Answer:

N2O5

Explanation:

Oxygen have 5 atoms

Answer 2

Answer:

Ba(OH)2

Explanation:

Ba is one atom , (OH)2 is a radical so both O and H contain 2 -2 atoms,

1+2+2=5 so B is correct