MCQ
An ion $M^{2+},$ forms the complexes $[M(H_2O)_6]^{2+} , [M(en)_3]^{2+}$ and $[MBr_6]^{4-},$ match the complex with the appropriate colour.
- AGreen, blue and red
- ✓Blue, red and green
- CGreen, red and blue
- DRed, blue and green
✓
Answer
Correct option: B.
Blue, red and green
b
$\Delta_{o}$ value is directly proportional to energy and inversely related to the wavelength. Also, more
$\Delta_{o}$ value is directly proportional to energy and inversely related to the wavelength. Also, more
the ligand is a strong field ligand More will be the value of $\Delta_{o}$ and lower will be its wavelength. Among the given complexes the strength of ligands are $B r^{-} colours are red, green, blue the absorbed colours must be green,red,orange. Hence the compound $\left[M\left(H_{2} O\right)_{6}\right]^{2+},\left[M(e n)_{3}\right]^{2+},\left[M(B r)_{6}\right]^{4-}$ are blue red and green respectively. Hence option $B$ is correct.
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