Phosphorus
15P
N ↑ P ↓ As Periodic table silicon ← phosphorus → sulfur
Panagway
colourless, waxy white, yellow, scarlet, red, violet, black waxy white (yellow cut), red (granules centre left, chunk centre right), and violet phosphorus
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	phosphorus, P, 15
Paglitok	/ˈfɒsfərəs/ [[Help:Pronunciation respelling key|Plantilya:Smallcaps all-fər-əs]]
Kategoriyang elemento	wala puthaw
Group, period, block	15, 3, p
Gibug-aton sa atomo	30.973762(2)
Kontorno sa elektron	[Ne] 3s2 3p3 2, 8, 5
History
Pagkadiskobre	Hennig Brand (1669)
Recognized as an element by	Antoine Lavoisier[1] (1777)
Physical properties
Phase	magahi
Density (near r.t.)	(white) 1.823, (red) ≈ 2.2 – 2.34, (violet) 2.36, (black) 2.69 g·cm−3
Melting point	(white) 44.2 °C, (black) 610 °C
Sublimation point	(red) ≈ 416 – 590  °C, (violet) 620 °C
Boiling point	(white) 280.5 °C
Heat of fusion	(white) 0.66 kJ·mol−1
Heat of vapourisation	(white) 12.4 kJ·mol−1
Molar heat capacity	(white) 23.824 J·mol−1·K−1
Vapour pressure (white)
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 279 307 342 388 453 549
Vapour pressure (red, bp. 431 °C)
P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 455 489 529 576 635 704
Atomic properties
Oxidation states	5, 4, 3, 2[2], 1[3], −1, −2, −3 (mildly acidic oxide)
Electronegativity	2.19 (Pauling scale)
Ionisation energies (more)	1st: 1011.8 kJ·mol−1
	2nd: 1907 kJ·mol−1
	3rd: 2914.1 kJ·mol−1
Covalent radius	107±3 pm
Van der Waals radius	180 pm
Miscellanea
Crystal structure	triclinic
Magnetic ordering	(white, red, violet, black) diamagnetic[4]
Thermal conductivity	(white) 0.236, (black) 12.1 W·m−1·K−1
Bulk modulus	(white) 5, (red) 11 GPa
CAS registry number	7723-14-0
Most stable isotopes
Main article: Isotopes of phosphorus
iso NA half-life DM DE (MeV) DP 31P 100% 31P is stable with 16 neutrons 32P syn 14.28 d β− 1.709 32S 33P syn 25.3 d β− 0.249 33S
v t e · r

Plantilya:Template reference list

1. ↑ cf. "Memoir on Combustion in General" Mémoires de l'Académie Royale des Sciences 1777, 592–600. from Henry Marshall Leicester and Herbert S. Klickstein, A Source Book in Chemistry 1400–1900 (New York: McGraw Hill, 1952)
2. ↑ webelements
3. ↑ Ellis, Bobby D.; MacDonald, Charles L. B. (2006). "Phosphorus(I) Iodide: A Versatile Metathesis Reagent for the Synthesis of Low Oxidation State Phosphorus Compounds". Inorganic Chemistry. 45 (17): 6864–74. doi:10.1021/ic060186o. PMID 16903744.
4. ↑ Magnetic susceptibility of the elements and inorganic compounds, in Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.