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NEET UG CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE
1
Hard
1 of 1
Understanding
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Statement-1: The ionic character exist in molecule but no dipole moment or bond moment exists permanently.
Statement-2: It arises so, as the two ionic forms having bond moments in opposite directions contribute equally to nullify the effect.
Statement-2: It arises so, as the two ionic forms having bond moments in opposite directions contribute equally to nullify the effect.
View answer and explanation
Correct option: A
Statement-1 is true, statement-2 is true and statement- 2 is correct explanation for statement-1.
Option A (Statement-1 is true, statement-2 is true and statement- 2 is correct explanation for statement-1) is correct because while the molecule is non-polar overall, there are instantaneous fluctuations in electron density that create temporary dipoles, and these can be thought of as arising from equally contributing ionic forms with opposing bond moments that cancel out.