The total number of unpaired electrons present in the complex K 3 Cr ( oxalate ) 3 is______.

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The total number of unpaired electrons present in the complex

K_{3} [Cr (oxalate)_{3}]

is______.

ChemistryCoordination CompoundsJEE MainJEE Main 2021 (18 Mar Shift 1)

Solution:

2872 Upvotes Verified Answer

The correct answer is: 3

$K_{3} [Cr (oxalate)_{3}]$
Chromium is in $+ 3$ oxidation state.

It has stable $t_{2 g}^{}$ $3$ configuration

Number of unpaired electrons in ${Cr}^{+ 3}$ will be $3 .$

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