Question

One way in which the formation of the magnesium oxide differs from the formation of the sodium chloride

Answer 1

Calcining at different temperatures produces magnesium oxide of different reactivity. Sodium chloride is formed when sodium atoms interact with chlorine atoms.

Answer 2

Magnesium oxide is produced by the calcination of magnesium carbonate or magnesium hydroxide. The latter is obtained by the treatment of magnesium chloride solutions, typically seawater, with lime. Calcining at different temperatures produces magnesium oxide of different reactivity.

Sodium chloride is formed when sodium atoms interact with chlorine atoms. When this occurs, sodium will donate an electron (which is a negatively-charged particle) to chlorine.