Q.1. Unlike phosphorus, nitrogen shows little tendency for catenation.
Q.2. Out of Bi(V) and Sb(V) which may be a stronger oxidising agent and why ?
Q.3. Which of the two: PH3 or NH3 is more basic ?
Q.4. Which hydride of group 15 elements has lowest boiling point ?
Q.5. Name three allotropes of phosphorus. Which of these is most reactive?
Q.6. Nitrogen exists as diatomic molecule but phosphorus exists as tetra-atomic molecule, P4. Explain.
Q.7. Though nitrogen exhibits +5 oxidation state, it does not form pentahalides. Give reason.
Q.8. Why is N2 less reactive at room temperature ?
Q.9. Phosphine has lower boiling point than ammonia. Give reason.
Q.10. Which of the two: NH3 or PH3 is soluble in water ?
Q.11. Arrange BiH3, PH3 and NH3, in the increasing order of their reducing character.
Q.12. Why does NO2 dimerise ? Explain.
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