Question

How many oxygen atoms are present in one molecule of nickel hydroxide, 3Ni(OH)2?

a. 1
b. 2
c. 3
d. 4

Answer 1

Nickel hydroxide

Ni(OH)₂

1 atom of Ni

2 atom of O

2 atom of H

answer B

hope this helps!

Answer 2

Answer : The correct option is, (b) 2

Explanation :

The given compound is,
`3Ni(OH)_2`

In
`Ni(OH)_2` compound, 1 atoms of nickel, 2 atoms of oxygen and 2 atoms of hydrogen.

In
`3Ni(OH)_2` compound, 3 atoms of nickel, 6 atoms of oxygen and 6 atoms of hydrogen.

That means,

As, 3 molecules of
`Ni(OH)_2` contains 6 atoms of oxygen atoms.

So, 1 molecule of
`Ni(OH)_2` contains
`(6)/(3)=2` atoms of oxygen atoms.

Hence, the correct option is, (b) 2