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Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complexes: cis-[Cr(en)2Cl2]Cl - CBSE (Science) Class 12 - Chemistry

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Question

Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complexes:

cis-[Cr(en)2Cl2]Cl

Solution 1

cis-[Cr(en)2Cl2]Cl

The central metal ion is Cr.

The coordination number is 6.

The oxidation state can be given as:

+ 2(0) + 2(−1) = +1

x − 2 = +1

x = +3

The d orbital occupation for Cr3+ is t2g3.

Solution 2

cis – [Cr(en)2Cl2]+ Cl

x + 0—2 =+1

Oxidation state, x =+3

Coordination number is 6 as ‘en’ is didentate. Cr3+ is a cfi case, paramagnetic.

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APPEARS IN

 NCERT Solution for Chemistry Textbook for Class 12 (2018 to Current)
Chapter 9: Coordinate Compounds
Q: 23.2 | Page no. 259

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Solution Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complexes: cis-[Cr(en)2Cl2]Cl Concept: Definitions of Some Important Terms Pertaining to Coordination Compounds.
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