Atomic No. Order:

Alphabetic Order:

Periodic Table

2, 8,

C
6

Si
14

Ge
32

Sn
50

Pb
82

Uuq
114

Uhq
164

Buq
214

Silicon

Symbol

Atomic Number

Relative Atomic Mass
¹²C = 12.0000

28.0855

Atomic Radius pm

117

First Ionisation Energy
kJ mol ^-1

786.5

Ionisation Energy (eV)

8,1517

Electronegativity

1.90

Density
kg m ^-3

2329 [293 K]
2525 [l., m.p.]

Molar Volume cm ³

12.06

Thermal Conductivity
W m ^-1 K ^-1

148 [300 K]

Melting Point K

1683

Boiling Point K

2628

Number of Isotopes

Inner + outer Shells

Inner + outer Orbitals

Filling Orbital

3p ²

Ground State Electron
Configuration

[Ne] 3s ²

3p ²

Ground State Electron
Configuration with
free Orbitals (n= 4)

0, 0, 4

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	2	4	10
4
5
6
7
8

Term Symbol

³P ₀

Discovery

Discovered by J.J. Berzelius (Stockholm, Sweden) in 1824

Name Derived From

Latin silicis meaning 'flint'

APSIDIUM ©	Created:	2002- 06-06	014.pdf
	Page update:	2004-12-12	014.pdf