Which of the following order is incorrect ?

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Acidic nature : NH3 < PH3 > AsH3

IE1 : Li < Be < B < C

Basic nature : Al2O3

Ionic radius : Li+< Na+ < K+ < Cs+

answer is B.

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Detailed Solution

The correct IE order is Li < B < Be < C. (Be is more than B due to stable ns2 electronic configuration).

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