Silicon | SSHADE

Atom

Name: Silicon

Name and identifiers

IUPAC name: Silicon
InChI: InChI=1S/Si
InChI key: XUIMIQQOPSSXEZ-UHFFFAOYSA-N
CAS number: 7440-21-3
Comments: natural Si - 92.2% 28Si + 4.7% 29Si +3.1% 30Si

Symbol and fundamental properties

Symbol: Si
Formula: $Si$
Charge: 0
Atomic number Z: 14

Molar mass: 28.0855 $g/mol$
State STP: solid
Electronegativity: 1.9

Isotopic composition

Isotope mixture type

terrestrial abundance

Isotopes

	IUPAC Name	A	Mole fraction
	Silicon-28	28	0.92223
	Silicon-29	29	0.04685
	Silicon-30	30	0.03092

X-ray absorption edges

Type	K	L1	L2	L3
Energy (keV)	1.8389	0.1487	0.0992	0.0992