Question

What is the atomic number of the element unniloctium?

(a) 106

(b) 118

(c) 108

(d) 116

I have been asked this question during an internship interview.

This intriguing question originated from Periodic Table Classification topic in section Classification of Elements and Periodicity in Properties of Chemistry – Class 11

Answer 1

The correct option is (c) 108

Easiest explanation: As per IuPAC nomenclature of periodic elements greater than 100, Un means 1, nil means 0 and oct means 8, so the element numbered 108 is unniloctium. It’s chemical names is Hassium and is represented by the symbol “Hs”. It is highly radioactive in nature and man made.