Ncert Exercises & Solutions

Select the correct option based on the statements below:

Assertion (A):	The bond angle in ethers is slightly less than the angle of tetrahedral.
Reason (R):	There is repulsion between the two bulky (— R) groups.

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	(A) is False but (R) is True.

Hint: In the ether, steric hindrance between alkyl groups are present

The hybridization of oxygen in ether is sp³ . The geometry is tetrahedral and the bond angle must be 109^o but due to steric hindrance between two bulky R groups, the bond angle is more than 109^o.

Hence, Assertion is false but Reason is true.

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