A) \[Ti<V<Cr<Mn\]: increasing number of oxidation states
B) \[T{{i}^{3+}}<{{V}^{3+}}<C{{r}^{3+}}<M{{n}^{3+}}\]: increasing magnetic moment
C) \[Ti<V<Cr<Mn\]: increasing melting points
D) \[Ti<V<Mn<Cr\]: increasing second ionisation enthalpy
Correct Answer: A
Solution :
[a] | ||||||||||
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\[Ti<V<Cr<Mn\] | ||||||||||
\[\because \] Magnetic moment, \[\mu =\sqrt{n(n+2)}\] | ||||||||||
where, n =no. of unpaired electrons | ||||||||||
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\[T{{i}^{3+}}<{{V}^{3+}}<C{{r}^{3+}}<M{{n}^{3+}}\] |
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