Number 1 is 4.875 Number 2 is 3.47 repeating
it is c. ionic compound just because it says ionic. can't be a crystal since there's no links to an ionic bond connected to crystals (and if it were it'd depend on the elements and the thingy majig itself right) and a covalent bond is an entirely different bond which isn't related to ionic. hope this helped, and i hope you have a good day too! :D
A I’m sure of it because it only makes since one would think ✊
The answer should be D hope this helps
