Answer:
ionic bond / electrovalent bond.
electrostatic attractions between oppositely charged ions .
eg: NaCl.
Na - 2, 8 ,1 Na^+ 2, 8
Cl - 2, 8 ,7 Cl^- 2 , 8, 8
Na^+ + Cl^- gives Na^+Cl^-
sodium loses one electron to attain nearest noble gas configuration.
Chlorine gain one electron from sodium to attain nearest noble gas configuration .
