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Assertion (A): Magnesium does not impart...

Assertion (A): Magnesium does not impart any characteristic colour to the flame.
Reason (R ): Due to small size and high effective nuclear charge, magnesium requires a large amount of energy for excitation of electrons.

A

If both `(A)` and `(R )` are correct and `(R )` is the correct explanation of `(A)`.

B

If both `(A)` and `(R )` are correct, but `(R )` is not the correct explanation of `(A)`.

C

If `(A)` is correct, but `(R )` is incorrect.

D

If `(A)` is incrrect, but `(R )` is correct.

Text Solution

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The correct Answer is:
A
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  2. Assertion (A): Alkaline earth metals are harder than alkali meatals. ...

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