Transition metal complex with highest value of crystal field spli… - Vidyadip

MCQ

Transition metal complex with highest value of crystal field splitting $\left(\Delta_{0}\right)$ will be ........ .

A
$\left[ Cr \left( H _{2} O \right)_{6}\right]^{3+}$
B
$\left[ Mo \left( H _{2} O \right)_{6}\right]^{3+}$
C
$\left[ Fe \left( H _{2} O \right)_{6}\right]^{3+}$
✓
$\left[ Os \left( H _{2} O \right)_{6}\right]^{3+}$

✓

Answer

Correct option: D.

$\left[ Os \left( H _{2} O \right)_{6}\right]^{3+}$

d
$CFSE$ of octahedral complexes with water is greater for $5 d$ series metal centre ion as compared to $3 d$ and $4 d$ series metal centre.

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