A non-metallic element. Solid at room temperature. Applied to the inner face of a cathode ray tube that when bombarded with electrons will emit light of various colours.


Primary use in agriculture and steel production.

In 1667 Hennig Brand accidentally discovers the element phosphorus during an experiment with urine, but he keeps it secret and Robert Boyle later discovers and describes the element.

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Atomic number 15 Clip
Atomic / Molecular Weight 30.97376 gmol-1Clip
Density (yellow) 1820 kgm-3Clip
Lattice constant 331 fmClip
Melting Point yellow 317.36 KClip
Boiling Point 553.56 KClip
Specific heat capacity 757 white, 670 red Jkg-1K-1Clip
Bulk Modulus of Rigidity 10.9e9 (red) 4.9e9 (white) Nm-2Clip
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See also: Periodic Table.

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Subjects: Chemistry