Answer : The correct option is, (b) 2
Explanation :
The given compound is, [tex]3Ni(OH)_2[/tex]
In [tex]Ni(OH)_2[/tex] compound, 1 atoms of nickel, 2 atoms of oxygen and 2 atoms of hydrogen.
In [tex]3Ni(OH)_2[/tex] compound, 3 atoms of nickel, 6 atoms of oxygen and 6 atoms of hydrogen.
That means,
As, 3 molecules of [tex]Ni(OH)_2[/tex] contains 6 atoms of oxygen atoms.
So, 1 molecule of [tex]Ni(OH)_2[/tex] contains [tex]\frac{6}{3}=2[/tex] atoms of oxygen atoms.
Hence, the correct option is, (b) 2
