NCERT Class XII Chemistry
Chapter - The p-Block Elements
Questions with Solutions
© examsnet.com
Question : 12
Total: 74
Nitrogen exists as diatomic molecule and phosphorus as P 4 . Why?
Solution:
Nitrogen is diatomic gaseous molecule at ordinary temperaturedue to its ability to form p π – p π multiple bonds. The molecule has oneσ and two π -bonds. Phosphorus exists as discrete tetratomic tetrahedralmolecules as these are not capable of forming multiple bonds due torepulsion between non-bonded electrons of the inner core.
© examsnet.com
Go to Question: