The correct electron configuration for the ion formed by sodium when producing an ionic compound with chlorine

Answer 1

I pulled this from wikipedia..I hope this helps:

For example, common table salt is sodium chloride. When sodium (Na) and chlorine (Cl) are combined, the sodium atoms each lose an electron, forming cations (Na+), and the chlorine atoms each gain an electron to form anions (Cl−). These ions are then attracted to each other in a 1:1 ratio to form sodium chloride (NaCl).

Na + Cl �¨ Na+ + Cl− �¨ NaCl

Answer 2

electron configuration is
1s2 2s2 2p6 3s1 for Na atom
1s2 2s2 2p6 for Na^+ ion.