1. Tardigrade
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  3. Chemistry
  4. Assertion: The maximum oxidation state of chromium in its compounds is +6. Reason: Chromium has only six electrons in ns and (n - 1)d orbitals.

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Q. Assertion : The maximum oxidation state of chromium in its compounds is $+6$.
Reason : Chromium has only six electrons in $ns$ and $(n - 1)d$ orbitals.

The d-and f-Block Elements

Solution:

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