Electrons in atoms answers

Answers to Electrons in atoms questions 1. (a) i. The second main energy level contains s and p sub-levels. The s sub-level is full after two electrons have been added successively (Li & Be). The p sub-level is then successively filled until six electrons have been added to give Ne. After Ne the third level starts to be filled (3s) showing that the maximum number of electrons that can occupy the 2p sub-level is 6.

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