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A student writes the configuration of Ni²⁺ as [Ar] 3d⁶… | StemPy Lab

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A student writes the configuration of Ni²⁺ as [Ar] 3d⁶ 4s². What is her mistake?

ChemistryMediumHigh School (11–12)The d- and f-Block Elements › Transition Elements (d-Block)Board Exam A-Level IB

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A student writes the configuration of $\text{Ni}^{2+}$ as $[\text{Ar}]\,3d^6 4s^2$ . What is her mistake?

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← Which pair of ions has the same number of unpaired electrons?One metal of the 3d series, from titanium to zinc, has a positive standard potential for the couple M²⁺/M. Which metal is it? →

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