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  • Assertion: Alkali metals are good conductors of heat and electricity. Reason: Alkali metals have mobile valence electrons that can easily move

Assertion: Alkali metals are good conductors of heat and electricity.

Reason: Alkali metals have mobile valence electrons that can easily move through the lattice structure, allowing for efficient transfer of energy.

Option: 1

Both Assertion (A) and Reason (R) are the true and Reason (R) is a correct explanation of Assertion (A).


Option: 2

Both Assertion (A) and Reason (R) are the true but Reason (R) is not a correct explanation of Assertion (A).


Option: 3

Assertion (A) is true and Reason (R) is false.


Option: 4

Assertion (A) is false and Reason (R) is true.


Answers (1)

best_answer

The assertion is true because alkali metals have mobile valence electrons that are free to move through the lattice structure of the metal. These mobile electrons are responsible for the high electrical conductivity and thermal conductivity of the metals. The electrons can easily transfer energy by moving through the lattice, making them efficient conductors of heat and electricity.

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Rishabh

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