Lithium

Frae Wikipedia
Jump to navigation Jump to search
Lithium,  3Li
Lithium paraffin.jpg
Lithium floatin in ile
General properties
Appearance silvery-white
Staundart atomic wecht (Ar, staundart) [6.9386.997] conventional: 6.94
Lithium in the periodic cairt
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
H

Li

Na
heliumlithiumberyllium
Atomic nummer (Z) 3
Group group 1 (alkali metals)
Period period 2
Element category   alkali metal
Block s-block
Electron confeeguration [He] 2s1
Electrons per shell
2, 1
Pheesical properties
Phase (at STP) solit
Meltin pynt 453.65 K ​(180.50 °C, ​356.90 °F)
Bylin pynt 1603 K ​(1330 °C, ​2426 °F)
Density (near r.t.) 0.534 g/cm3
when liquid (at m.p.) 0.512 g/cm3
Creetical pynt 3220 K, 67 MPa (extrapolatit)
Heat o fusion 3.00 kJ/mol
Heat o vapourisation 136 kJ/mol
Molar heat capacity 24.860 J/(mol·K)
Vapour pressur
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 797 885 995 1144 1337 1610
Atomic properties
Oxidation states +1 ​(a strangly basic oxide)
Electronegativity Pauling scale: 0.98
Ionisation energies
  • 1st: 520.2 kJ/mol
  • 2nd: 7298.1 kJ/mol
  • 3rd: 11815.0 kJ/mol
Atomic radius empirical: 152 pm
Covalent radius 128±7 pm
Van der Waals radius 182 pm
Color lines in a spectral range
Miscellanea
Creestal structurbody-centred cubic (bcc)
Body-centered cubic creestal structur for lithium
Speed o soond thin rod 6000 m/s (at 20 °C)
Thermal expansion 46 µm/(m·K) (at 25 °C)
Thermal conductivity 84.8 W/(m·K)
Electrical resistivity 92.8 nΩ·m (at 20°C)
Magnetic orderin paramagnetic
Young's modulus 4.9 GPa
Shear modulus 4.2 GPa
Bouk modulus 11 GPa
Mohs haurdness 0.6
CAS Nummer 7439-93-2
History
Diskivery Johan August Arfwedson (1817)
First isolation William Thomas Brande (1821)
Main isotopes o lithium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
6Li 7.5% stable
7Li 92.5% stable
6Li content mey be as law as 3.75% in
naitural samples. 7Li would tharefor
hae a content o up tae 96.25%.
| references | in Wikidata

Lithium (frae [λίθος lithos] error: {{lang-xx}}: text has italic markup (help), "stane") is a chemical element wi seembol Li an atomic nummer 3. It is a saft, siller-white metal alangin tae the alkali metal group o chemical elements.