NEET Chemistry The p-Block Elements (XII) Questions Solved

BOARD

Explain the following :

(a) NO2 readily forms a dimer.

(b) BiCl3 is more stable than BiCl5.

NO2 contains 7+2×8 i.e. 23 odd electrons. In the valence shell N has seven electrons and hence less stable. To acquire stability it dimerizes to form N2O4

(b) BiCl3 is more stable than BiCl5 due to inert pair effect because as we move down the group, the stability of +3 oxidation state increases and of +5 decreases.

Difficulty Level:

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