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Electron Configurations and Orbital Diagrams KEY Draw orbital diagrams for the following elements: 1. Phosphorus ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑ ↑ ↑ 1s 2s 2p 3s 3p 4s 3d 4p. The next six electrons will go in the 2p orbital. The p orbital can hold up to six electrons. According to the periodic table above, phosphorus belongs to Group 5A. Therefore, Its valence electrons should be 5. Let's check using the electron configuration: 1s2 2s2 2p6 3s2 3p3 = 15 electrons = atomic number of P.
Answer: A neutral Phosphorus Atom has five valence electrons. These are contained in the third energy level of the atom. The Phosphorus Element as it would be represented on a modern periodic table. Source |
Bohr Model of a Phosphorus Atom. |
Electron Configuration of Phosphorus with a Lewis Diagram on the side as well. Source |
Phosphorus as it moves in a biochemical process. Source |
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