1)

 The element  that does not exhibit allotropy is 


A) phosphrous

B) arsenic

C) antimony

D) bismuth

Answer:

Option D

Explanation:

All the members of group 15 (except bismuth) shows the property of allotropy.Nitrogen exists in two solid allotropic forms. Phosphorus exists in several allotropic forms . Arsenic and antimony exists in three allotropic forms