What are the basic units-single atoms, molecules, or formula units-that compose each of the following substances?

Question

a)N2

b)MgCl2

so.. my choices are single,molecules or formula units.

i think a) is molecule and b) is formular units

can yyou check my answers?

thanks

Answer 1

i got the answer nvm. but thanks to however was going to help:)

Answer 2

They both look good to me.