question_answer 48)

    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  is four.

Answer:

                    (a-) True statement is that single N ? N bond is weaker than the single P. ? P bond. This is why phosphorous show allotropy but nitrogen does not. (i) PH3 acts as a ligand in the formation of coordination compound due to presence of lone pair of electrons. (ii) NO2 is paramagnetic in nature due to presence of one unpaired electron. Structure of NO2 is (iii) Covalency of nitrogen in  is 4.