ഫലകം:Infobox phosphorus

Phosphorus, ₀₀P

waxy white (yellow cut), red (granules centre left, chunk centre right), and violet phosphorus
Phosphorus
Pronunciation	/ˈfɒsfərəs/ ​(FOS-fər-əs)
Allotropes	white, red, violet, black and others (see Allotropes of phosphorus)
Appearance	waxy white/ red/ black/ colorless/ yellow
Standard atomic weight Ar°(P)
	30.973761998±0.000000005 30.974±0.001 (abridged)
Phosphorus in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson N ↑ P ↓ As silicon ← phosphorus → sulfur
Group	group 15 (pnictogens)
Period	period 3
Block	p-block
Electron configuration	[Ne] 3s2 3p3
Electrons per shell	2, 8, 5
Physical properties
Phase at STP	P-wl: solid
Melting point	(white) 317.3 K ​(44.2 °C, ​111.6 °F)
Boiling point	550 K ​(277 °C, ​531 °F)
Density (near r.t.)	(white) 1.823 g/cm3 (red) 2.34 g/cm3 (black) 2.69 g/cm3
Heat of fusion	(white) 0.66 kJ/mol
Heat of vaporization	12.4 kJ/mol
Molar heat capacity	(white) 23.824 J/(mol·K)
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 P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 455 489 529 576 635 704
Atomic properties
Oxidation states	ഫലകം:Element-symbol-to-oxidation-state-entry
Electronegativity	Pauling scale: 2.19
Ionization energies	(more)
Atomic radius	empirical: 100 pm calculated: 98 pm
Covalent radius	106 pm
Van der Waals radius	180 pm
Spectral lines of phosphorus
Other properties
Natural occurrence	primordial
Thermal conductivity	(white) 0.236 W/(m⋅K)
Magnetic ordering	no data
Bulk modulus	11 GPa
CAS Number	7723-14-0
Isotopes of phosphorus
Main isotopes Decay abun­dance half-life (t1/2) mode pro­duct 31P ഫലകം:Isotopes/main/format-percent/format-number stable 32P trace 14.269 d β− 32S 33P trace 25.35 d β− 33S