The correct increasing order of basic strength for the following compounds is :
A
II<I<III
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B
II<III<I
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C
III<I<II
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D
III<II<I
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Solution
The correct option is CII<I<III
The correct increasing order of basic strength is as follows: II<I<III
Greater the electron density ring, greater will be its basic strength. The electron-withdrawing group decreases basic strength while the electron-donating group increases basic strength.