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Atomic and Ionic Sizes of Lanthanides

Which of the ...

Question

Which of the following is the weakest base?

A

({C H}_{3})_{2} N H

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B

({C H}_{3})_{3} N

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C

C_{6} H_{5} {N H}_{2}

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D

C_{6} H_{5} {N H C H}_{3}

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Solution

The correct option is B $C_{6} H_{5} {N H}_{2}$
Basic order: $({C H}_{3})_{2} N H > ({C H}_{3})_{3} N > C_{6} H_{5} {N H C H}_{3} > C_{6} H_{5} {N H}_{2}$

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