Question

Select correct about Uuo?
(A) It belong to 7th period
(B) It belong to 18th group
A
(C) It is a P-block element
(D) It is an inert gas​

Answer 1

Answer:

Uuo (Oganesson) =>

1. Atomic number(Z) is 118.

2. It belongs to 18th group.

3. It belongs to 7th period.

4. It is an inert gas and also is a P-block element.

5. This chemical element was first synthesized in the year 2002 at Joint Institute for Nuclear Research (JINR) in Dubna, near Moscow, Russia.

6. In the year 2015 it was recognized as a new element by IUPAC and IUPAP but, was named Oganesson on 28 November 2016.

7. Chemical element is named after the nuclear physicist Yuri Oganessian who has also helped in discovering heaviest elements in periodic table.

8. This chemical element is unstable.

All the options are correct as given in question.

Answer 2

Answer- The above question is from the chapter 'Halogens'.

Given question: Select correct about Uuo.

(A) It belong to 7th period.

(B) It belong to 18th group.

(C) It is a P-block element.

(D) It is an inert gas.​

Answer: All the four options are correct.

Additional Information:-

1. Uuo i.e. Ununoctium is an element which has atomic number 118.

2. So, it belongs to 7th period and 18th group.

3. Since 18th group comes under P-Block elements, Uuo is a P-Block element too.

4. 18th group is a group of noble gases like: Neon, Argon, Krypton, Xenon, Radon, etc. So, being located in 18th, it is an inert i.e. noble gas.

5. Uuo has an IUPAC official name i.e. Oganesson whose symbol is Og.

6. Symbol of Uuo is ₁₁₈Uuo²⁹⁴ or ₁₁₈Og²⁹⁴ .