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In the simplified electron configuration (noble-gas shorthand), what is the electron configuration of phosphorus (P)?
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9. Electrons in Atoms and the Periodic Table
The Electron Configuration (Simplified)
Multiple Choice
Which electron configuration corresponds to a neutral oxygen atom (atomic number 8) in the simplified orbital notation?
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검증된 단계별 안내1
Identify the atomic number of oxygen, which is 8. This means a neutral oxygen atom has 8 electrons.
Recall the order in which electrons fill orbitals: first the 1s orbital, then the 2s orbital, and finally the 2p orbitals.
Fill the 1s orbital with 2 electrons, since it can hold a maximum of 2 electrons.
Next, fill the 2s orbital with 2 electrons, as it also holds a maximum of 2 electrons.
Distribute the remaining electrons (8 - 2 - 2 = 4) into the 2p orbitals, which can hold up to 6 electrons, so place 4 electrons there.
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