Phosphorus

silicon ← phosphorus → sulfur N ↑ P ↓ As 15P Periodic table
Ìfarahàn
colorless, waxy white, yellow, scarlet, red, violet, black waxy white (yellow cut), red, violet and black phosphorus
Àwọn ìní àníkárí
Orúkọ, àmì-ìdámọ̀, nọ́mbà	phosphorus, P, 15
Ẹ̀ka apilẹ̀sẹ̀	nonmetal
Àdìpọ̀, ìgbà, block	15, 3, p
Ìwúwo átọ́mù	30.973762(2) g·mol−1
Ìtòjọ ẹ̀lẹ́ktrónì	[Ne] 3s2 3p3
Àwọn ẹ̀lẹ́ktrónì lórí ọ̀nà kan	2, 8, 5 (Image)
Àwọn ìní aláfójúrí
Kíki (tó súnmọ́ r.t.)	(white) 1.823, (red) ≈ 2.2 – 2.34, (violet) 2.36, (black) 2.69 g·cm−3
ojúàmì ìyọ́	(white) 44.2 °C, (black) 610 °C
Sublimation point	(red) ≈ 416 – 590  °C, (violet) 620 °C
ajúàmì ìhó	(white) 280.5 °C
Heat of fusion	(white) 0.66 kJ·mol−1
Heat of vaporization	(white) 12.4 kJ·mol−1
Specific heat capacity	(25 °C) (white) 23.824 J·mol−1·K−1
Vapor pressure (white)
P/Pa 1 10 100 1 k 10 k 100 k at T/K 279 307 342 388 453 549
Vapor 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, 1 , -1, -2, -3 (mildly acidic oxide)
Electronegativity	2.19 (Pauling scale)
Ionization 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
Magnetic ordering	(white,red,violet,black) diamagnetic
Thermal conductivity	(300 K) (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