Question

Which best describes why NH4+ can form an ionic bond with Cl–?
Its outermost shell gains one or more electrons from Cl–.
Its positive charge is attracted to the negative charge of Cl–.
It has a negative charge that is spread over the entire ion.
It has a nitrogen atom that is strongly attracted to Cl–.

Answer 1

thoughts?

you can eliminate choice C (as indicated by the sign, NH4+ is a positive not a negative ion), as well as D (the term outermost shell is usually applied to individual atoms rather than ions)

between A+B, which one do you think better explains why the ionic bond forms?