Micron sized red phosphorus nodules from a Japanese chemical manufacturer.

P - Phosphorus

The flammable non-metal was discovered in Germany in 1669 by Hennig Brand who precipitated it from urine. Phosphate buffers are used in general chemistry, and phosphoric acid is used for synthesis in organic chemistry.

Atomic number - 15 Density g/mL 1 .82

Atomic weight u 30 .97376 Melting point K 317 .3

Bonding radius A 1 .06 Boiling point K 550

Atomic radius A 1 .23 Heat of vaporization kJ/mol 12 .129

Ionization Potential V 10 .486 Heat of fusion kJ/mol 0 .657

Electronegativity - 2 .19 Specific heat J/gK 0 .77

The oxide is mildly acidic.
Crystal are monoclinic.

Electron config. : [Ne] 3s² 3p³

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

H He

Li Be B C N O F Ne

Na Mg Al Si P S Cl Ar

K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr

Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe

Cs Ba La* Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn

Fr Ra Ac** Rf Db Sg Bh Hs Mt 110 111 112 113

Lanthanides* Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

Actinides ** Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr

Isotopes of P: Click mass number for decay process, product for element page.

026
20 msec
EC/EC2p/ECp,18.120
Si-26/Mg-24/Al-25
26.011776 027
260 msec
EC/ECp,11.630
Si-27/Al-26
26.999194 028
270.3 msec
EC,14.332 MeV
Si-28
27.992312 029
4.142 sec
EC,4.943 MeV
Si-29
28.981801 030
2.498 min
EC,4.232 MeV
Si-30
29.978313 031 100%

Stable

30.973761 032
14.262 da
B-,1.711 MeV
S-32
31.973907

033
25.34 da
B-,5.845 MeV
S-33
32.971725 034
12.43 sec
B-,5.374 MeV
S-34
33.973635 035
47.3 sec
B-,3.989 MeV
S-35
34.973314 036
5.6 sec
B-,10.413 MeV
S-36
35.978259 037
2.31 sec
B-,7.900 MeV
S-37
36.979613 038
0.64 sec
B-/B-n,12.390
S-38/S-37
37.984465 039
0.16 sec
B-/B-n,10.510
S-39/S-38
38.986419

040
260 msec
B-/B-n,14.500
S-40/S-39
39.991046 041
120 msec
B-/B-n,13.800
S-41/S-40
40.994846 042
110 msec
B-/B-n,17.300
S-42/S-41
42.000107 043
33 msec
B-/B-n,15.600
S-43/S-42
43.003327 MASS abund.
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass

Updated by clh on 2/6/98. This is not a publication of Phoenix College.

Atomic number	-	15		Density	g/mL	1	.82
Atomic weight	u	30	.97376	Melting point	K	317	.3
Bonding radius	A	1	.06	Boiling point	K	550
Atomic radius	A	1	.23	Heat of vaporization	kJ/mol	12	.129
Ionization Potential	V	10	.486	Heat of fusion	kJ/mol	0	.657
Electronegativity	-	2	.19	Specific heat	J/gK	0	.77
The oxide is mildly acidic.				Crystal are monoclinic.
Electron config. : [Ne] 3s² 3p³
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026 20 msec EC/EC2p/ECp,18.120 Si-26/Mg-24/Al-25 26.011776	027 260 msec EC/ECp,11.630 Si-27/Al-26 26.999194	028 270.3 msec EC,14.332 MeV Si-28 27.992312	029 4.142 sec EC,4.943 MeV Si-29 28.981801	030 2.498 min EC,4.232 MeV Si-30 29.978313	031 100% Stable 30.973761	032 14.262 da B-,1.711 MeV S-32 31.973907
033 25.34 da B-,5.845 MeV S-33 32.971725	034 12.43 sec B-,5.374 MeV S-34 33.973635	035 47.3 sec B-,3.989 MeV S-35 34.973314	036 5.6 sec B-,10.413 MeV S-36 35.978259	037 2.31 sec B-,7.900 MeV S-37 36.979613	038 0.64 sec B-/B-n,12.390 S-38/S-37 37.984465	039 0.16 sec B-/B-n,10.510 S-39/S-38 38.986419
040 260 msec B-/B-n,14.500 S-40/S-39 39.991046	041 120 msec B-/B-n,13.800 S-41/S-40 40.994846	042 110 msec B-/B-n,17.300 S-42/S-41 42.000107	043 33 msec B-/B-n,15.600 S-43/S-42 43.003327	MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass