Lithium

3
Li
Gruppe
1
Periode
2
Blok
s
Protons
Electrons
Neutrons
3
3
4
General Properties
Atomnummer
3
Atommasse
6,941
Mass Number
7
Kategori
Alkalimetaller
Farve
Silver
Radioactive
Nej
From the Greek word lithos, stone
Krystalstruktur
Rumcentreret Kubisk
History
Lithium was discovered by Johann Arfvedson in 1817 when he was analyzing minerals from the island of Uto in Sweden.

The pure metal was isolated the following year by both Swedish chemist William Thomas Brande and English chemist Sir Humphry Davy working independently.

In 1855, larger quantities of lithium were produced through the electrolysis of lithium chloride by Robert Bunsen and Augustus Matthiessen.
Elektroner i hver skal
2, 1
Elektronkonfiguration
[He] 2s1
Li
Lithium is the only metal which reacts with nitrogen under normal conditions
Physical Properties
Tilstandsform
Fast stof
Massefylde
0,534 g/cm3
Smeltepunkt
453,69 K | 180,54 °C | 356,97 °F
Kogepunkt
1615,15 K | 1342 °C | 2447,6 °F
Smeltevarme
3 kJ/mol
Fordampningsvarme
147 kJ/mol
Varmefylde
3,582 J/g·K
Abundance in Earth's crust
0,0017%
Abundance in Universe
6×10-7%
0.5
Billede akkrediteringer: Images-of-elements
0.5 grams lithium under argon
CAS Number
7439-93-2
PubChem CID Number
3028194
Atomic Properties
Atomradius
152 pm
Kovalent radius
128 pm
Elektronegativitet
0,98 (Paulings skala)
Ionization Potential
5,3917 eV
Atomic Volume
13,10 cm3/mol
Varmeledningsevne
0,847 W/cm·K
Oxidationstrin
1
Applications
Pure lithium metal is used in rechargeable lithium ion batteries.

Lithium stearate is used as an all-purpose and high-temperature lubricant.

Lithium is used in special glasses and ceramics.

Metallic lithium and its complex hydrides are used as high energy additives to rocket propellants.
Lithium is corrosive and requires special handling to avoid skin contact
Isotoper
Stable Isotopes
6Li, 7Li
Unstable Isotopes
4Li, 5Li, 8Li, 9Li, 10Li, 11Li, 12Li