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Question
how many electrons are found in each energy level of a neutral atom of aluminum? drag the energy level to the number of electrons that it contains. get help here third energy level first energy level second energy level two electrons eight electrons three electrons
Step1: Recall aluminum's atomic number
Aluminum has an atomic number of 13, so a neutral Al atom has 13 electrons. The electron configuration follows the rule of electron filling in energy levels: the first energy level (\(n = 1\)) can hold a maximum of 2 electrons, the second (\(n = 2\)) can hold up to 8, and the third (\(n = 3\)) holds the remaining electrons.
Step2: Calculate electrons in each level
- First energy level (\(n = 1\)): Fills with 2 electrons (since \(2n^2\) for \(n = 1\) is \(2(1)^2=2\)).
- Second energy level (\(n = 2\)): Fills with 8 electrons ( \(2n^2\) for \(n = 2\) is \(2(2)^2 = 8\)).
- Third energy level (\(n = 3\)): Remaining electrons: \(13 - 2 - 8=3\) electrons.
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- third energy level: three electrons
- first energy level: two electrons
- second energy level: eight electrons