Chlorine atom differs from chloride ion in the number of

Chlorine atom does not differ from chloride ion in the number of which of the following?

An atom differs from its ion in

An atom differs from its ion in

An atom differs from its ion in

With reference to formation of compounds from atoms by electron transfer - electrovalency, state the basic steps in the conversion of sodium & chlorine atoms to sodium & chloride ions leading to the formation of the compound - sodium chloride. [electronic configuration of: Na = 2,8,1 & Cl = 2,8,7]

Compare : chlorine atom and chloride ion, with respect to (i) atomic structure, (ii) electrical state