What occupies the energy levels of an atom?

Answer

The energy levels of an atom are occupied by electrons. The highest occupied energy level in an atom occurs in the outer shell. A good read about atoms is the book 'Atoms' by Chris Oxlade.
Q&A Related to "What occupies the energy levels of an atom?"
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The highest occupied energy level is the highest
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Electron shells or energy level of atoms can hold different number of electrons. 1st holds 2, 2nd holds 8 and the 3rd also holds 8. Aluminium has 13 electrons (look at periodic table
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5 electrons are in the highest occupied energy level of a chlorine atom. Its electron configuration is [Ne] 3s2 3p5. report this answer. Updated on Saturday, February 04 2012 at 11:
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