What is the name of the compound NiC03 * 8H20?

The answer is:

Nickel II carbonate octahydrate

The explanation:

-when Ni is the symbol of Nickel.

and CO3 is the symbol of carbonate group.

and both have 2 valence so, it will be write 2:2 = 1:1 → NiCO3 named Nickel caronae.

and any compound contain H2O will be named Hydrate and here we have 8 H2O so, i will e named octa (because of his 8) octahydrate

so, the compound will be Nickel II carbonate octahydrate