Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following complexes:
The central metal ion is Cr.
The coordination number is 6.
The oxidation state can be given as:
x + 2(0) + 2(−1) = +1
x − 2 = +1
x = +3
The d orbital occupation for Cr3+ is t2g3.
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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