What kind of crystalline solid is nickel (Ni)?
O
A. Molecular solid
O
O
O
B. Ionic solid
C. Metallic solid
D. Network solid

I'm pretty sure it's C I'm sorry if I'm wrong

C

Explanation:

Nickel is a metal so it would be a metallic solid

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).