Question

which of the following can form covalent bond with equal sharing of electrons between the combining atoms

1. hi
2. cl₂
3. mg₂o
4. h₂o₂

Explanation:

Covalent bonds with equal sharing of electrons occur between atoms of the same electronegativity, typically between identical non - metal atoms. In $Cl_2$, two chlorine atoms share electrons equally as they have the same electronegativity. In $HI$, $H_2O_2$, the atoms have different electronegativities leading to unequal sharing (polar covalent bonds). $Mg_2O$ is an ionic compound.

Answer:

1. $Cl_2$