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:

Equal - sharing of electrons in a covalent bond occurs when the electronegativity difference between the combining atoms is zero. In $Cl_2$, two chlorine atoms with the same electronegativity share electrons equally. In $HI$, $H_2O_2$, there is an electronegativity difference between the atoms leading to unequal sharing. $Mg_2O$ is an ionic compound.

Answer:

1. $Cl_2$