Atomic No. Order:

Alphabetic Order:

Periodic Table

2, 8,

N
7

P
15

As
33

Sb
51

Bi
83

Uup
115

Uhp
165

Bup
215

Phosphor

Symbol

P
Phosphorus

Atomic Number

Relative Atomic Mass
¹²C = 12.0000

30.973761

Atomic Radius pm

110 (white)
115 (red)

First Ionisation Energy
kJ mol^-1

1011.7

Ionisation Energy (eV)

10,4867

Electronegativity

2.19

Density
kg m^-3

1.82 g/cc at 20° C (white P.)
1820 (P₄) [293 K]
2690 (black) [293 K]
2200 (red) [293 K]

Molar Volume cm³

17.02 (P₄)

Thermal Conductivity
W m^-1 K^-1

0.235 (P₄) [300 K]
12.1 (black) [300 K]

Melting Point K

317.3 (P₄)
683 (red P. under pressure)

Melting Point

44.1° C (111.4° F) (white P.)

Boiling Point K

553 (P₄)

Boiling Point

280° C (536° F) (white P.)

Number of Isotopes

oxidation states

-3, +3, +5

Inner + outer Shells

Inner + outer Orbitals

Filling Orbital

3p ³

Ground State Electron
Configuration

[Ne] 3s²

3p ³

Ground State Electron
Co nfiguration with
free Orbitals (n= 3)

0, 0, 3

Ground State Electron
Configuration with
compressed Orbitals (n=10)

0, 0, 10

Singularity

	s	p		d	f	g	h	i	j
1	2
2	2	6
3	2	3	3	10
4
5
6
7
8

Term Symbol

⁴S_3/2

Discovery

Discovered by H. Brandt (Hamburg, Germany) in 1669

Name Derived From

Greek [phosphoros] meaning 'bringer of light'

Info

solid material that emits light, or luminesces, when exposed to radiation such as ultraviolet light or an electron beam. Hundreds of thousands of phosphors have been synthesized, each one having its own characteristic colour of emission and period of time during which light is emitted after excitation ceases. When certain phosphors luminesce from electron excitation, the process is called electroluminescence, and these phosphors are used in the production of radar and television screens. Phosphors excited by ultraviolet, visible, and infrared radiation are used principally in the so-called fluorescent lamps commonly employed for general illumination.

APSIDIUM	Created:	2002-06-04	015.pdf
	Page update:	2006-01-09	015.pdf