Question

Assertion (A) : In Newlands’ octaves, the properties of lithium and sodium were found to be same.​
Reason (R) : Sodium is the eighth element after lithium in Newland’s octave.

• A. Both (A) and (R) are true, and (R) is correct explanation of the (A).
• B. (A) is false, but (R) is true.
• C. Both (A) and (R) are true, but (R) is not the correct explanation of the (A).
• D. (A) is true, but (R) is false.

Answer 1

The correct option is A Both (A) and (R) are true, and (R) is correct explanation of the (A).

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