Assertion :Noble gas element exist as mono-atoms in molecules. Reason: Noble gas element have stable outer electronic configuration.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Inert gases have stable outer electronic configuration, thus they exist in monoatomic state. Example: Helium[ $1 s^{2}$ ] , Neon[ $1 s^{2} 2 s^{2} 2 p^{6}$ ] .

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Similar questions

Assertion (A) Rate constant determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason (R) Reactant molecules undergo chemical change irrespective of their orientation during collision.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Assertion (A) All collision of reactant molecules lead to product formation.

Reason (R) Only those collisions in which molecules have correct orientation and sufficient kinetic energy lead to compound formation.

Q. Assertion : Two electrons of helium atom are placed in only one shell but three electrons of lithium need two shells.
Reason: A shell can have maximum

{2n}^{2}

electrons.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion

Lithium sulphate does not form alums.

Reason

$L i^{+}$ is too small to form a stable lattice required for double-salt/alum formation.

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Assertion :Noble gas element exist as mono-atoms in molecules. Reason: Noble gas element have stable outer electronic configuration.

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.Inert gases have stable outer electronic configuration, thus they exist in monoatomic state. Example: Helium[1s2] , Neon[1s22s22p6] .

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Inert gases have stable outer electronic configuration, thus they exist in monoatomic state. Example: Helium[ $1 s^{2}$ ] , Neon[ $1 s^{2} 2 s^{2} 2 p^{6}$ ] .