JEE Main Chemistry question

Which combination of atoms can form a polar covalent bond?

(A)H and H
(B)H and BrCorrect
(C)N and N
(D)Na and Br

Answer: (B)

Solution

A polar covalent bond needs two different non-metal atoms with a moderate electronegativity difference (so electrons are shared unequally but not transferred completely). H–H and N–N are bonds between identical atoms (zero electronegativity difference, non-polar

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Question ID VK-155871