JEE Main 2022 — Classification of Elements and Periodicity in Properties Question with Solution

IUPAC nomenclature has been recommended for all the elements with $\mathrm{Z}>100$. It was decided by IUPAC that the names of elements beyond atomic number $100$ should use Latin words for their numbers. The names of these elements are derived from their numerical roots.

Numerical	$0$	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$	$9$
roots	nil	un	bi	tri	quad	pent	hex	sept	oct	en

 

The atomic mass of given molecule $\left[\mathrm{Rn}\right]5{\mathrm{f}}^{14}6{\mathrm{d}}^{1}7{\mathrm{s}}^2 = 86+14+1+2 = 103$

Name of element with this atomic number $= \mathrm{un}+\mathrm{nil}+\mathrm{tri}+\mathrm{ium} = \mathrm{unniltrium}$