Carbon cannot lose four electrons or gain four electrons as these processes make the system unstable due to the need for additional energy.

CH₃Cl therefore eliminates its octet suspension by sharing its 4 electrons with carbon atoms or other atoms.

The bond present in CH₃Cl is therefore a covalent bond.

Here, carbon needs four electrons to complete its octet, while each hydrogen atom needs one electron to complete its duplet. Also, chlorine needs an electron to complete the octet.

Thus, all of these share electrons and as a result, carbon forms 3 bonds with hydrogen and one with the chlorine.