Question

Which of these substances contains the most total atoms per molecule?

A) Na2PFO3


B) H2SO4


C) Ni(NO3)2


D) NbCl5

Answer 1

C is your answer as it has 9 atoms

Answer 2

Answer:
`Ni(NO_3)_2`

Step-by-step explanation: A molecule is made up by combination of same atoms or different atoms.

1 molecule of
`Na_2PFO_3` consists of 2 atoms of sodium, 1 atom of phosphorous, 1 atom of flourine and three atoms of oxygen. Thus the total number of atoms is 7.

1 molecule of
`Na_2PFO_3` consists of 2 atoms of sodium, 1 atom of phosphorous, 1 atom of flourine and three atoms of oxygen. Thus the total number of atoms is 7.

1 molecule of
`H_2SO_4` consists of 2 atoms of hydrogen, 1 atom of sulfur and 4 atoms of oxygen. Thus the total number of atoms is 7.

1 molecule of
`Ni(NO_3)_2` consists of 1 atom of nickel, 2 atoms of nitrogen and 6 atoms of oxygen. Thus the total number of atoms is 9.

1 molecule of
`NbCl_5` consists of 1 atom of niobium and 5 atoms of chlorine. Thus the total number of atoms is 6.

Thus substance which contains the most total atoms per molecule is
`Ni(NO_3)_2`.