Assertion (A): Alkali metals and their salts | vedclass

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(A) Assertion $(A)$ is true because alkali metals have low ionization enthalpies, meaning their valence electrons are loosely held.When these metals o

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$(A)$ and $(R)$ are true. $(R)$ is the correct explanation for $(A)$

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(A) Assertion $(A)$ is true because alkali metals have low ionization enthalpies, meaning their valence electrons are loosely held.When these metals or their salts are heated in a flame, the energy from the flame is sufficient to excite these valence electrons to higher energy levels.When these excited electrons return to their ground state, they emit energy in the form of visible light, which gives characteristic flame colours.Therefore, the reason $(R)$ correctly explains the assertion $(A)$.

Assertion $(A)$: Alkali metals and their salts impart characteristic flame colours.
Reason $(R)$: Alkali metals have low ionization enthalpy values. So, electron excitation is possible.
The correct option among the following is

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Assertion $(A)$: Alkali metals and their salts impart characteristic flame colours.Reason $(R)$: Alkali metals have low ionization enthalpy values. So, electron excitation is possible.The correct option among the following is