Question

Explain the formation of sodium chloride and calcium oxide on the basis of the concept of electron transfer from one atom to another atom.

Answer 1

$\underset{}{Na\left(g\right)}⟶{Na}_{\left(g\right)}^{+}+\left(e^{-}\right)$

one electron donor $\downarrow Cl\left(g\right)$

${Cl}^{-}\left(g\right)$

${Na}^{+}\left(g\right)+{Cl}^{-}\left(g\right)⟶NaCl\left(solid\right)$

$\underset{}{Ca\left(g\right)}\to {Ca}_{\left(g\right)}^{2+}+\left({2e}^{-}\right)$

Two electron donor $\downarrow O\left(g\right)$

$O^{2-}\left(g\right)$

$\therefore {Ca}^{2+}\left(g\right)+O^{2-}\left(g\right)\to CaO\left(solid\right)$