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MODEL PAPER 2025 — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryMODEL PAPER 20251 Mark
Question
Assertion $(A): \ce{[Mn(CN)_6]}^3- $ has a magnetic moment of two unpaired electrons while $\ce{[MnCl_6]^{3-}}$ has a paramagnetic moment of four unpaired electrons.
Reason $(R): \ce{[Mn(CN)_6]^{3-}}$​​​​​​​ is inner orbital complexes involving $\ce{d^2sp^3}$​​​​​​​ hybridisation, on the other hand, $\ce{[MnCl_6]^{3-}}$​​​​​​​ is outer orbital complexes involving $\ce{sp^{3}d^2}$​​​​​​​ hybridisation.
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Answer

Both $A$ and $R$ are true and $R$ is the correct explanation of $A$

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