Question

The element having the highest boiling point among following is:

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

Answer 1

The correct option is C $Sb$

The element having the highest boiling point is $Sb$.

On moving down the group the boiling point of the elements increases. But here the boiling point of $Sb$ is more than the boiling point of $Bi$. This is because of the loose packing of atoms of $Bi$.

For reference-

$T_b\left(Sb\right)={1587}^{o}Cand{T}_b={1564}^{o}C$

Option C is correct.