Atomic and Physical Properties of Group 18 Elements

IMPORTANT

Atomic and Physical Properties of Group 18 Elements: Overview

This topic covers concepts such as Group 18: Noble Gases, Occurrence of Noble Gases, Atomic and Physical Properties of Noble Gases, Electronic Configuration of Noble Gases, Atomic Radius of Noble Gases, Ionization Enthalpy of Noble Gases, etc.

Important Questions on Atomic and Physical Properties of Group 18 Elements

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 1

Noble gases do not have positive electron gain enthalpy.

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 2

Comment on the statement.

Noble gases have positive electron gain enthalpy.

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 3

Why noble gases have positive electron gain enthalpy?

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 4

The solubility of noble gas in water is of the order

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 5

Which of the following is correct about compound X (Atomic number =18)?

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 6

Ionisation enthalpy of molecular oxygen is very close to that of _____.(Neon/Xenon)

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 7

Ionisation enthalpy of molecular oxygen is very close to that of _____.

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 8

Write a short note on the occurrence of noble gases in atmosphere.

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 9

How is radon obtained from radium?

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 10

Explain the following :

 Helium and neon do not form compounds with fluorine.

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 11

Assertion: The majority of noble gas compounds are those of xenon (Xe).

Reason: Xenon has the lowest ionization enthalpy and can be easily oxidized by oxidizing agents like oxygen and fluorine

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 12

Which is the most abundant noble gas?

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 13

Name the noble gas not present in the air.

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 14

Write the nuclear reaction which produces a radioactive inert gas.

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 15

 Hydrogen is the lightest element but helium has lowest boiling point. Why?

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 16

Define the following term.

Inert gases 

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 17

_____ is not an inert gas.

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 18

Name the elements of group 18.
 

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 19

Why do noble gases have comparatively large atomic sizes?

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Chemistry>p-Block Elements>Atomic and Physical Properties of Group 18 Elements> Q 20

Why has it been difficult to study the chemistry of radon ?