EASY
Earn 100

Why do boiling points of noble gases increase from helium to radon ?

Important Questions on Elements of Groups 16, 17 and 18

MEDIUM
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: Amongst He, Ne, Ar and Kr; 1 g of activated charcoal adsorbs more of Kr.

Reason R: The critical volume Vc (cm3 mol–1) and critical pressure Pc (atm) is highest for Krypton but the compressibility factor at critical point Zc is lowest for Krypton.

In the light of the above statements, choose the correct answer from the options given below.

EASY
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
Which one has the highest boiling point?
EASY
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
The element that even can diffuse through silica glass is
EASY
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
Inert gases have positive electron gain enthalpy. Its correct order is
EASY
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
What is the difference between α— particle and He atom?
EASY
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
Name the noble gas having ns2np6 electronic configuration but does not have d-orbitals in its valence shell.
HARD
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
Why are boiling points of noble gases very low? How the boiling points vary on going down the group (gr-18) ?
 
MEDIUM
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements

Account for the following:

Boiling point of noble gases increases from He to Rn.

EASY
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
Ionization energy of noble gases is very high. Why?
MEDIUM
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
Why the noble gases have very low boiling points?
EASY
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements

Answer the following :

Noble gases have very low boiling points. Why?

EASY
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements

Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.

HARD
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
Assertion A The boiling points of noble gases increases from He to Xe.

Reason (R) The interatomic van der Waals' attractive forces increases from He to Xe.

The correct answer is
EASY
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
The electronic configuration of elements A, B & C are He 2s1, Ne 3s1 & Ar 4s1 respectively. Which one of the following order is correct for the first ionization potentials (in KJmol–1) of A, B & C?
MEDIUM
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
Assertion (A) : Noble gases have very low boiling points.

Reason (R) : All noble gases have general electronic configuration of ns2 np6 (except He)
MEDIUM
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
Why do noble gases have comparatively large atomic sizes?
EASY
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements

The atomicity of a noble gas is

MEDIUM
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
The electrons present in the valence shell of a noble gas atom can be:
EASY
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
Which of the following statements is/are correct?
MEDIUM
Chemistry>Inorganic Chemistry>Elements of Groups 16, 17 and 18>Atomic and Physical Properties of Group 18 Elements
Which one of the following compounds XeOF4, XeF2 , XeF4 and NeF2 does not exist.