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There is a continuous increase in size among Lanthanoids with an increase in atomic number. Given…

Chemistry20251 markAssertion-reason

Assertion: There is a continuous increase in size among Lanthanoids with an increase in atomic number.

Reason: Lanthanoids do not show Lanthanoid contraction.

Given below are two statements marked Assertion and Reason. Read the two statements carefully and select the correct option.
  • (a)Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  • (b)Both Assertion and Reason are true but Reason is not the correct explanation for assertion.
  • (c)Assertion is true but Reason is false.
  • (d)Both Assertion and Reason are false.

Answer

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d-and f-Block Elements

From ISC 2025 Specimen Chemistry Paper 1, question 1(B)(vii).