Question

Show the formation of Na2O by the transfer of electrons. 

Answer 1

`Na_2O`

Na=11=2,8,1 (Valency = 1)

O = 8 = 2,6  (Valency = 2)

(a) `Na → Na^(+)+ e^-`

      `(Na → Na^(+)+e^-) xx 2`

      `2Na → 2Na + 2e^-`

(b) `O + e^(-)→ O^-`

      `(O + e^(-) → O^- ) xx 2`

       `2O + 2e^(-) → O^-`

`i.e. 2Na + O → Na_2O`