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Phosphorus has 15 protons, 16 neutrons, and 15 electrons.
Phosphorus protons
- Protons = atomic number
From the periodic table, find the atomic number of phosphorus.
The atomic number of phosphorus is 15. Hence, phosphorus has a total of 15 protons.
Phosphorus neutrons
- Neutrons = atomic mass – atomic number
The atomic mass of phosphorus is 30.973762, so we’ll take the roundup value as 31. And the atomic number of phosphorus is 15.
Subtract the atomic number (15) from the atomic mass (31). Hence, phosphorus has a total of 31 – 15 = 16 neutrons.
Phosphorus electrons
- Electrons = atomic number
The atomic number of phosphorus is 15. Hence, phosphorus has a total of 15 electrons.
Next: Sulfur protons neutrons electrons
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External links
- https://www.mytutor.co.uk/answers/59418/GCSE/Chemistry/How-many-protons-electrons-and-neutrons-does-a-phosphorus-atom-have/
- https://socratic.org/questions/how-many-neutrons-are-present-in-the-nucleus-of-a-phosphorus-atom
- https://material-properties.org/phosphorus-protons-neutrons-electrons-electron-configuration/
- https://valenceelectrons.com/phosphorus-protons-neutrons-electrons/
- https://homework.study.com/explanation/how-many-protons-are-in-an-atom-of-phosphorus-which-atomic-number-is-15-atomic-mass-is-31-neutrons-is-16-and-electrons-15.html
- https://www.numerade.com/questions/phosphorus-has-the-atomic-number-15-and-an-atomic-mass-of-31-amu-how-many-protons-neutrons-and-elect/
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