Join / Login
Back

Important questions on Group 18 Elements

Which of the following gases has the greatest density at STP conditions?

A

B

C

D

E

View Answer

The noble gas mixture is cooled in a coconut bulb at . The gases that are not adsorbed are:

A

Helium and Neon

B

Helium and Xenon

C

Xenon and Neon

D

none of these

View Answer

The inert gas atom in which the total number of d-electrons is equal to the difference in numbers of total and electrons, is:

A

B

C

D

View Answer

The boiling points of neon and krypton are and respectively. Using these data estimate the boiling point of argon. (report answer as the negative of the closest integer)

A

B

C

D

View Answer

Name any five periods properties .

View Answer

Electron affinity of noble gas element is:

A

very high

B

high

C

low

D

zero

View Answer

Which statement(s) is/are correct?

This question has multiple correct options
A

Radon is obtained from radium

B

Argon is most abundant noble gas in atmosphere

C

Monazite is a source of gas

D

Helium is present in natural gas

View Answer

Answer the following question:
a. What is the basicity of and why?
b. Why does fluorine not play the role of a central atom in interhalogen compound?
c. Why do noble gases have very low boiling points?

View Answer

Which of the following names are used for group zero elements?

This question has multiple correct options
A

Rare gases of atmosphere

B

Noble gases

C

Inert gases

D

Rare-earths

View Answer

VIEW MORE