Question

Which of the following is NOT covalent compound?
A H2O B NaCl
C F2 D A & B

Answer 1

NaCl is not a covalent compound as it is formed with transfer of electrons.

Answer 2

B. NaCl is not a covalent compound.

Explanation:

• The covalent compounds are formed by the sharing of $e^{-}$ between the atoms, the shared pair of electron stays near the more elctronegative atom.
• The ionic compounds are formed when atoms donate and gain electrons to complete their octet.
• The water molecule, fluorine gas contains covalent compound.
• The sodium chloride contains ionic bond, sodium donates electron to chlorine and their octet gets complete.
• Therefore, option B. is correct.