What is the general valence-electron ground-state electron configuration for neutral alkaline earth metals? A)(^ns¹) B)(^ns²) C)(1s²2s¹) D)(1s²2s²)

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The ground-state electron configuration for neutral alkaline earth metals can be represented as [X] ns^2, where [X] represents the noble gas configuration of the element before the alkaline earth metal in the periodic table. Thus, for example, the electron configuration of calcium (Ca) can be written as [Ar] 4s^2. Choice B is the only option that includes this general valence-electron configuration for all neutral alkaline earth metals.

What Is the General Valence-Electron Ground-State Electron Configuration for Neutral