Question

in a polar covalent bond. answer: a both atoms in the bond have the same level of electronegativity. b one atom in the bond must have higher electronegativity than the other atom. c one atom must be a h atom. d both atoms in the bond must be metals.

Explanation:

A polar covalent bond is formed when there is an unequal sharing of electrons between two atoms. This unequal sharing occurs because one atom has a higher electronegativity than the other. Electronegativity is the ability of an atom to attract electrons towards itself. If both atoms had the same electronegativity (Option A), the bond would be non - polar covalent. Option C is incorrect because a polar covalent bond does not require one atom to be hydrogen. Option D is wrong as covalent bonds (polar or non - polar) are formed between non - metals, not metals.

Answer:

B. one atom in the bond must have higher electronegativity than the other atom.