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: C
Solution :
(a)Element | Oxidation states |
\[Ti\] | \[+2,+3,+4\] |
\[V\] | \[+2,+3,+4,+5\] |
\[Cr\] | \[+1,+2,+3,+4,+5,+6\] |
\[Mn\] | \[+1,+2,+3,+4,+5,+6,+7\] |
Ion | Outermost electronic arrangement | No. of unpaired electron |
\[T{{i}^{3+}}\] \[{{V}^{3+}}\] \[C{{r}^{3+}}\] \[M{{n}^{3+}}\] | \[3{{d}^{1}}\] \[3{{d}^{2}}\] \[3{{d}^{3}}\] \[3{{d}^{4}}\] | \[1\] 2 3 4 |
You need to login to perform this action.
You will be redirected in
3 sec