Question

Why Becl2 is covalent while mgcl2 is ionic

Answer 1

Answer:

becl2 is covalent and mgcl2 and cacl2 are ionic

That depends on the extent of electron sharing that happens between the two atoms. Covalency means sharing of electrons, Ionic means giving away the electrons or holding the electrons. Ionic nature increases with increase in the size of cation or metal.

Answer 2

Answer:

BeCl2 is covalent while Mgcl2 is ionic as Be and Mg belongs to same group of valency 2 because magnesium is highly reactive in nature and react with chlorine to form ionic or electrostatic bond while BeCl2 I not more reactive to form ionic bond and that's why it share electron and form covalent bond