The maximum number of electrons found in any energy level (shell) at any point in time is calculated by the formula A)V= I x R. B)W = F x D. C)N = amu x Z. D)2n².

Question

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The formula 2n^2 gives the maximum number of electrons that can be present in a particular energy level (shell), where n is the principal quantum number. The subsequent letters and numbers (S, P, U) indicate the subshells within that energy level, and the superscripts (1, 2, 0, etc.) indicate the number of electrons that can occupy each subshell. So, for example, 2nS1 indicates the s subshell within the second energy level, which can hold a maximum of 2 electrons. The formula in choice D is simply a compact way of indicating the maximum number of electrons in each subshell within the first three energy levels.

The Maximum Number of Electrons Found in Any Energy Level