Question

Which among the following group $15$ elements does not exhibit allotropy?

• A. $N$
• B. $As$
• C. $Sb$
• D. $Bi$

Answer 1

Answer: (D)

All the elements of group $15$ except $Bi$ show allotropy as nitrogen exists in two solid forms namely $\alpha$ -nitrogen and $\beta$ -nitrogen. Phosphorus exists in a number of allotropic forms. As exists as grey, yellow and black arsenic and Sb exists as metallic, $\alpha$ and $\beta$ -antimony.