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Which element has a total of three shell...

Which element has a total of three shells, with four electrons in its valence shell?

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To determine which element has a total of three shells and four electrons in its valence shell, we can follow these steps: ### Step 1: Understand the Concept of Electron Shells and Valence Electrons - Electron shells are energy levels where electrons reside around the nucleus of an atom. The outermost shell is known as the valence shell, and the electrons in this shell are called valence electrons. ### Step 2: Identify the Number of Shells - We are looking for an element with three electron shells. The principal quantum number (n) indicates the number of shells: - n = 1 corresponds to the first shell, ...
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