Question

What are the roots of 1, 1, and 9 respectively as per the IUPAC nomenclature, and find out its symbol?

(a) un, bi, and quad; Ubq

(b) nil, bi, and sept; Ubs

(c) un, un, and enn; Uue

(d) un, bi, and enn; Ube

I got this question in an internship interview.

The doubt is from Periodic Table Classification in division Classification of Elements and Periodicity in Properties of Chemistry – Class 11

Answer 1

The correct choice is (c) un, un, and enn; Uue

The best I can explain: As per IUPAC nomenclature, the roots are as follows: 0 – nil, 1 – un, 2 – bi, 3 – tri, 4 – quad, 5 – pent, 6 – hex, 7 – sept, 8 – oct and 9 – enn. So the roots for 1, 1 and 9 are un, un, and enn. Hence the symbol of the elements is Uue.