Given below are two statements... | P-Block JEE Main 2021

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JEE MAIN 2021

26.02.2021_S2

Question

Given below are two statements :one is labelled as Assertion A and the other is labelled as Reason R Assertion A : In $\mathrm{T} \ell I_3$, isomorphous to $\mathrm{CsI}_3$, the metal is present in +1 oxidation state. Reason R: T $\ell$ metal has fourteen $f$ electrons in the electronic configuration. In the light of the above statements, choose the most appropriate answer from the options given below:

Select the correct option:

A

A is correct but R is not correct

B

Both A and R are correct and R is the correct explanation of A.

C

A is not correct but R is correct

D

Both A and R are correct but R is NOT the correct explanation of A.

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

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