Draw the electron dot structures of sodium and chlorine.Show the formation of sodium chloride from sodium and chlorine by the transfer of electrons.

Electronic Configuration of Na: 2,8,1 
Na → Na+ + e-
Electronic Configuration of Na+: 2,8 (which is stable electronic config.)

Electronic Configuration of Cl: 2,8,7
Cl + e- → Cl-
Electronic Configuration of Cl- : 2,8,8  (which is stable electronic config.)​


⇒ NaCl
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