Statement-1: The highest oxidation state of chromium in its compounds is +6.
Statement-2: Chromium atom baa only electrons in $ns$ and $(n - 1) d$ orbitals.

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Both (A) and (R) are true but (R) is not the correct explanation of (A)

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are false

(A) is true but (R) is false

answer is A.

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Detailed Solution

Since Chromium Cr has an electronic configuration of $[A r] 3 d^{5} 4 s^{1}$ its maximum oxidation state can be +6, reason being it has only six electrons in $(n - 1) d$ and ns orbital’s.

Statement-1 is true, Statement-2 is true; Statement-2 is a correct explanation for Statement-1.

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