Which of the following statements is NOT true | vedclass

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(B) Transition metal elements exhibit variable oxidation states due to the participation of $(n-1)d$ and $ns$ electrons in bonding.They show catalytic

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All their ions are colored.

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(B) Transition metal elements exhibit variable oxidation states due to the participation of $(n-1)d$ and $ns$ electrons in bonding.They show catalytic properties due to their ability to adopt multiple oxidation states and provide a large surface area.They exhibit both paramagnetic and diamagnetic properties depending on the presence of unpaired electrons.However,not all their ions are colored. Ions with $d^0$ or $d^{10}$ electronic configurations (e.g.,$Sc^{3+}$,$Zn^{2+}$,$Cu^+$) are colorless because they lack unpaired electrons for $d-d$ transitions.Therefore,the statement that all their ions are colored is incorrect.

Column-$I$	Column-$II$
$(a) \ Co^{3+}$	$(i) \ \sqrt{8} \ B.M.$
$(b) \ Cr^{3+}$	$(ii) \ \sqrt{35} \ B.M.$
$(c) \ Fe^{3+}$	$(iii) \ \sqrt{3} \ B.M.$
$(d) \ Ni^{2+}$	$(iv) \ \sqrt{24} \ B.M.$
	$(v) \ \sqrt{15} \ B.M.$

Which of the following statements is $NOT$ true for transition metal elements?

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