Question

What is the atomic number 0f the element with the symbol Uus?
A. $117$
B. $116$
C. $115$
D. $114$

Answer 1

Hint: The name is derived from the atomic number of elements using the Latin numerical roots. These roots are then further put together in order of the digits which makes up the atomic number of the element.

Complete answer:
Firstly, let us understand from where the nomenclature came. Discovering new elements requires sophisticated technologies which are possessed by few countries only. Scientists are tempted to claim for its discovery which may lead to disputes between these countries due to competitive spirits.

So, to avoid such problems IUPAC has given recommendation that until a new discovery is proved and its name is officially recognized, a systematic nomenclature be derived directly from the atomic number of its element using the numerical roots for $0$ and numbers $1-9$. We should note that the roots are put together in order of digits which makes the atomic number and “ium” is added at the end.

Following table shows the name and abbreviation for the digits.

Digit	Name	Abbreviation
0	Nil	n
1	Un	U
2	Bi	b
3	Tri	t
4	quad	q
5	pent	p
6	hex	h
7	sept	s
8	oct	o
9	enn	e

Hence the correct answer is option ‘A’.

Note: The element with atomic number 117 is Tennessine. It is a super heavy element of the periodic table, which does not occur naturally and is synthesized by exposing a radioisotope target to a beam of another specific isotope. The element is only used for the research purpose.