Question

In a covalent bond formation:

• A. transfer of electrons takes place
• B. sharing of electrons between two atoms takes place
• C. electrons are shared by one atom only
• D. electrons are donated by one atom and shared by both atoms.

Answer 1

The correct option is B sharing of electrons between two atoms takes place

Covalent bonds are formed when two atoms begin sharing electrons, the electrons are attracted towards the nuclei that are positively charged. Example: $Cl-Cl$.

It is not necessary that both atoms of covalent bond always will be the same, they can be different for example $HF$ molecule, in such case electrons not shared equally and attract towards the more electronegative element.