Which of the following ions has electronic configuration $[Ar]3d^6$ ?
(At. nos. $Mn = 25, Fe = 26, Co = 27, Ni = 28$)
(At. nos. $Mn = 25, Fe = 26, Co = 27, Ni = 28$)
- A$Ni^{3+}$
- B$Mn^{3+}$
- C$Fe^{3+}$
- D$Co^{3+}$
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View SolutionGiven below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$: Generally, $3d$ transition metals have high melting points.
Reason $R$: Involvement of $3d$-electrons in addition to $4s$-electrons in the interatomic metallic bonding.
In light of the above statements, choose the most appropriate answer from the options given below:
Assertion $A$: Generally, $3d$ transition metals have high melting points.
Reason $R$: Involvement of $3d$-electrons in addition to $4s$-electrons in the interatomic metallic bonding.
In light of the above statements, choose the most appropriate answer from the options given below:
MediumNEET 2026
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