"Element 15 - Phosphorus - Science Notes and Projects." Science Notes and Projects. Wordpress, 31 May 2013. Web. 22 Jan. 2015.
| Atomos, Atomos |
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Symbol: P
Atomic number: 15
Atomic mass: 30.974
Protons: 15
Electrons: 15
Neutrons: 16
Energy Levels: 3
