Q. 145.0( 1 Vote )

Which of the following statements is wrong?
A. Single N–N bond is stronger than the single P–P bond.

B. PH3 can act as a ligand in the formation of coordination compound with transition elements.

C. NO2 is paramagnetic in nature.

D. Covalency of nitrogen in N2O5 is four.

Answer :

as electronegativity of nitrogen is greater than phosphorous due to small size of nitrogen therefore N-N bond is weaker than P-P bond.

Hence first statement is wrong.

PH3 acts as ligand in the formation of coordinate compounds due to presence of lone pair. Therefore second statement is correct.

NO2 is paramagnetic in nature due to presence of unpaired electrons. Therefore third statement is also correct.

Nitrogen cannot extend its covalency than 4 therefore fourth statement is also correct.

Hence the correct option is (i).

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