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  • The increasing order of basicity for the following intermediates is (from weak to strong) <img alt="" src="https://cdn.entrance360.com/media/uploads/2020/01/16/capture-489.JPG" style="hei

The increasing order of basicity for the following intermediates is (from weak to strong)

Option: 1

v < iii < ii < iv < i


Option: 2

iii < i < ii < iv < v


Option: 3

v < i < iv < ii < iii


Option: 4

iii < iv < ii < i < iv


Answers (1)

best_answer

1. Basicity is inversely proportional to electronegativity.

2. Basicity is inversely proportional to the stability of the negative charge.

i) is most unstable due to the three +I effects which will destabilise the negative charge, So it will be most basic in nature.

iv) will be second-most unstable, it will be second most basic among these.

the order which matches is: 1) v < iii < ii < iv < i 

We do not compare ii, iii and v without checking the data of pka value.

Hence, option number (1) is correct.

Posted by

avinash.dongre

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