Question

What’s the name of the 109th element as per the nomenclature?

(a) Unnilennium

(b) Unnilunium

(c) Ununnillium

(d) Ununennium

I have been asked this question in homework.

My question is taken from Periodic Table Classification topic in section Classification of Elements and Periodicity in Properties of Chemistry – Class 11

Answer 1

Correct choice is (a) Unnilennium

To explain: As per IUPAC nomenclature, 0 – nil, 1 – un, 2 – bi, 3 – tri, 4 – quad, 5 – pent, 6 – hex, 7 – sept, 8 – oct and 9 – enn. Here it’s 109 so 1 – un, 0 – nil and 9 – enn, combining them its unnilennium (adding “-ium” after it).