Multiple choice

Which of the following statements is true?

  1. PH3 has higher boiling point than NH3.

  2. Nitrogen does not form pentahalide.

  3. NH3 is a stronger base than PH3.

  4. Both H3PO3 and H3PO4 are tribasic.

  5. NH3 acts as Lewis acid.

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Due to absence d-orbitals, N cannot extend its valency beyond four. Due to smaller size of nitrogen, there is high electron density on nitrogen.