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==Key Stage 3==
[[File:PhosphorusSymbol1.png|right|300px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Phosphorus]].]]
[[File:P-31_WK.PNG|right|200px|thumb|A 2 dimensional representation of a [[Phosphorus]] [[atom]] with 15 [[proton]]s and 16 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 15 [[electron]]s orbiting the [[Atomic Nucleus|nucleus]].]]
===Meaning===
[[Phosphorus]] is a [[Group 5]] [[non-metal]] [[element]], on the [[Periodic Table]], with an [[Atomic Number|atomic number]] of 15.
==Key Stage 4==
[[File:PKS4.PNG|right|200px|thumb|The [[Chemical Symbol|chemical symbol]] for [[Phosphorus]].]]
[[File:P-31_WK.PNG|right|200px|thumb|A 2 dimensional representation of the [[Bohr Model]] of a [[Phosphorus]]-31 [[isotope]] with 15 [[proton]]s and 16 [[neutron]]s in the [[Atomic Nucleus|nucleus]] and 2 [[electron]]s in the first [[Electron Orbital|shell]], 8 in the second and 5 in the [[Outer Shell|outer shell]].]]
===Meaning===
[[Phosphorus]] is a [[Group 5]] [[non-metal]] [[element]], on the [[Periodic Table]], with 15 [[proton]]s in the [[Atomic Nucleus|nucleus]].