Decreasing −I effect of the given group is : (a) −CN (b) NO2 (c)−NH2 (d) −F
A
b>a>d>c
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B
b>c>d>a
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C
c>b>d>a
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D
c>b>a>d
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Solution
The correct option is Cc>b>a>d Higher the electronegativity of the bonding element, higher the -I effect. Among the given alternatives, F has the maximum -I effect followed by −NO2, −CN, and −NH2