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Question

(B) The color of transition metal ions depends on the presence of unpaired electrons in the $d$-orbitals ($d-d$ transition).$(1)$ $V^{4+}$ $(3d^1)$: H

Vedclass · Accepted Answer

$1$ $\rightarrow d, 2$ $\rightarrow c, 3$ $\rightarrow a, 4$ $\rightarrow b$

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(B) The color of transition metal ions depends on the presence of unpaired electrons in the $d$-orbitals ($d-d$ transition).$(1)$ $V^{4+}$ $(3d^1)$: Has one unpaired electron,appears blue.$(2)$ $Ti^{3+}$ $(3d^1)$: Has one unpaired electron,appears purple.$(3)$ $Ti^{4+}$ $(3d^0)$: No unpaired electrons,appears colorless.$(4)$ $Mn^{2+}$ $(3d^5)$: Has five unpaired electrons,appears pink.Therefore,the correct matching is: $(1$ $\rightarrow d, 2$ $\rightarrow c, 3$ $\rightarrow a, 4$ $\rightarrow b)$.

Column $A$	Column $B$
$(1)$ $V^{4+}$	$(a)$ Colorless
$(2)$ $Ti^{3+}$	$(b)$ Pink
$(3)$ $Ti^{4+}$	$(c)$ Purple
$(4)$ $Mn^{2+}$	$(d)$ Blue
	$(e)$ Violet

Match Column $A$ with Column $B$:

Column $A$ Column $B$

$(1)$ $V^{4+}$ $(a)$ Colorless

$(2)$ $Ti^{3+}$ $(b)$ Pink

$(3)$ $Ti^{4+}$ $(c)$ Purple

$(4)$ $Mn^{2+}$ $(d)$ Blue

$(e)$ Violet

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Match Column $A$ with Column $B$: Column $A$ Column $B$ $(1)$ $V^{4+}$ $(a)$ Colorless $(2)$ $Ti^{3+}$ $(b)$ Pink $(3)$ $Ti^{4+}$ $(c)$ Purple $(4)$ $Mn^{2+}$ $(d)$ Blue $(e)$ Violet