Directions for Question: The questions consist of two statements each, printed as assertion and reason. While answering these questions you are required to choose any one of the following four responses:
Assertion: The dipole moment helps to predict whether a molecule is polar or n on polar. Reason: The dipole moment helps to predict geometry of molecules.A) If both A and R are true, and R is a correct explanation of the A.
B) If both A and R are true, but R is not a correct explanation of the A.
C) If A is true, but R is false.
D) If both A and R are false.
Correct Answer: A
Solution :
The linear triatomic molecules of the type \[B-A-B\] e.g. \[C{{O}_{2}}\] have no dipole moment, not because the individual \[C=O\] bonds are non-polar but because the two bond moments (polarity) cancel each other. Therefore, geometry of molecules can be predicted by the value of dipole moment.
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