In the given 15 group elements which element can exist in multiple allotropes?
Nitrogen
Phosphorus
Nitrogen and Phosphorus
Antimony
Nitrogen can exist in two allotropes, namely diatomic nitrogen and monatomic nitrogen. Phosphorus can exist in several allotropes, including white phosphorus, red phosphorus, and black phosphorus. Hence option 3 is the correct answer.
Option(1) Both Nitrogen and Phosphorus can exist in multiple allotropes. Hence option 1 is incorrect.
Option(2) Both Nitrogen and Phosphorus can exist in multiple allotropes. Hence option 2 is incorrect.
Option(4) Antimony cannot exist in multiple allotropes.. Hence option 4 is incorrect.