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  • In the following question, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices. Assertion: Actinides form relatively less stable complexes as compared to lanthanoids.

In the following question, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.

Assertion: Actinides form relatively less stable complexes as compared to lanthanoids.
Reason: Actinides can utilise their 5f orbitals along with 6d orbitals in bonding but lanthanoids do not use their 4f orbital for bonding.

(i) Both assertion and reason are true, and reason is the correct explanation of the assertion.
(ii) Both assertion and reason are true but reason is not the correct explanation of assertion.
(iii) Assertion is not true but reason is true.
(iv) Both assertion and reason are false.

Answers (1)

The answer is the option (iii). Actinoids form more stable complex compounds than Lanthanoids.

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