Question

what is the chemical formula for nickel oxide?

Answer 1

check it on google because I am not sure. Sorry.

Answer 2

Nickel is an element with atomic number 28

electronic configuration is 1s2 2s2 2p6 3s2 3p6 4s2 3d8

belongs to 4 period and group 10 of periodic table ...

Valency is : 2

Oxygen valence is also 2 with atomic number 6

So Nickel oxide formula is NiO