JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
The \(INCORRECT\) statement is
- A the spin-only magnetic moments of \([Fe(H_2O)_6]^{2+}\) and \([Cr(H_2O)_6]^{2+}\) are nearly similar.
- B the spin-only magnetic moment of \([Ni(NH_3)_4(H_2O)_2]^{2+}\) is \(2.83\,BM.\)
- C the gemstone, ruby, has \(Cr^{3+}\) ions occupying the octahedral sites of beryl.
- D the color of \([CoCl(NH_3)_5]^{2+}\) is violet as it absorbs the yellow light.
Answer & Solution
Correct Answer
(C) the gemstone, ruby, has \(Cr^{3+}\) ions occupying the octahedral sites of beryl.
Step-by-step Solution
Detailed explanation
In gemstone, ruby has \(Cr^{3+}\) ion occupying the octahedral sites of aluminium oxide \((Al_2O_3)\) normally occupied by \(Al^{3+}\) ion.
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