JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

1 Medium

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Understanding +4 | -1

Assertion (A):

{Na}^{+}

and

{Al}^{3+}

are isoelectronic species.
Reason (R):

Na

belongs to

s

-block, while

{Al}

belongs to

p

-block.

View answer and explanation

Correct option: B

Both Assertion and Reason are correct; and Reason is not the correct explanation of Assertion

Option B is correct because both the assertion and reason are true, but the reason does not explain why the species are isoelectronic.

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