Phosphorus
15
Panagway
colourless, waxy white, yellow, scarlet, red, violet, black
Kinatibuk-ang mga kinaiya
Ngalan, simbolo , kaiphan
phosphorus, P, 15
Paglitok
[[Help:Pronunciation respelling key|Plantilya:Smallcaps all
Kategoriyang elemento wala puthaw
Group , period , block 15 , 3 , p
Gibug-aton sa atomo 30.973762(2)
Kontorno sa elektron [ Ne ] 3s2 3p3 Electron shells of phosphorus (2, 8, 5)
History
Pagkadiskobre Hennig Brand (1669)
Recognized as an element by
Antoine Lavoisier [ 1]
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)−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] [ 3] 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
31 P100%
31 P is stable with 16 neutrons
32 Psyn 14.28 d
β− 1.709
32 S
33 Psyn 25.3 d
β− 0.249
33 S
· r
