Lithium,  3Li
Spectral lines of lithium
ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକlithium, Li
Appearancesilvery-white (shown floating in oil)
ଉଚ୍ଚାରଣ/ˈlɪθiəm/ LI-thee-əm
Lithium in the periodic table
Hydrogen (other non-metal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (other non-metal)
Nitrogen (other non-metal)
Oxygen (other non-metal)
Fluorine (halogen)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (other non-metal)
Sulfur (other non-metal)
Chlorine (halogen)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (post-transition metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (other non-metal)
Bromine (halogen)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (post-transition metal)
Tin (post-transition metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (halogen)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanoid)
Cerium (lanthanoid)
Praseodymium (lanthanoid)
Neodymium (lanthanoid)
Promethium (lanthanoid)
Samarium (lanthanoid)
Europium (lanthanoid)
Gadolinium (lanthanoid)
Terbium (lanthanoid)
Dysprosium (lanthanoid)
Holmium (lanthanoid)
Erbium (lanthanoid)
Thulium (lanthanoid)
Ytterbium (lanthanoid)
Lutetium (lanthanoid)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (post-transition metal)
Lead (post-transition metal)
Bismuth (post-transition metal)
Polonium (post-transition metal)
Astatine (halogen)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinoid)
Thorium (actinoid)
Protactinium (actinoid)
Uranium (actinoid)
Neptunium (actinoid)
Plutonium (actinoid)
Americium (actinoid)
Curium (actinoid)
Berkelium (actinoid)
Californium (actinoid)
Einsteinium (actinoid)
Fermium (actinoid)
Mendelevium (actinoid)
Nobelium (actinoid)
Lawrencium (actinoid)
Rutherfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Ununtrium (unknown chemical properties)
Flerovium (unknown chemical properties)
Ununpentium (unknown chemical properties)
Livermorium (unknown chemical properties)
Ununseptium (unknown chemical properties)
Ununoctium (unknown chemical properties)
H

Li

Na
heliumlithiumberyllium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)3
ଶ୍ରେଣୀ, ବ୍ଳକgroup 1 (alkali metals), s-block
ପର୍ଯ୍ୟାୟperiod 2
ମୌଳିକ ପ୍ରକାର  alkali metal
ମାନକ ପରମାଣବିକ ଓଜନ (±) (Ar)6.94(1)
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ[He] 2s1
per shell
2, 1
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥାsolid
ଗଳନାଙ୍କ453.69 K ​(180.54 °C, ​356.97 °F)
ସ୍ଫୁଟନାଙ୍କ1615 K ​(1342 °C, ​2448 °F)
Density near r.t.0.534 g/cm3
when liquid, at m.p.0.512 g/cm3
Critical point(extrapolated)
3223 K, 67 MPa
Heat of fusion3.00 kJ/mol
Heat of 147.1 kJ/mol
Molar heat capacity24.860 J/(mol·K)
 pressure
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 ​strongly basic oxide
ElectronegativityPauling scale: 0.98
Atomic radiusempirical: 152 pm
Covalent radius128±7 pm
Van der Waals radius182 pm
Miscellanea
Crystal structurebody-centered cubic (bcc)
Body-centered cubic crystal structure for lithium
Speed of sound thin rod6000 m/s (at 20 °C)
Thermal expansion46 µm/(m·K) (at 25 °C)
Thermal conductivity84.8 W/(m·K)
Electrical resistivity92.8 n Ω·m (at 20 °C)
Magnetic orderingparamagnetic
Young's modulus4.9 GPa
Shear modulus4.2 GPa
Bulk modulus11 GPa
Mohs hardness0.6
CAS Number7439-93-2
ଇତିହାସ
ଆବିଷ୍କାରJohan August Arfwedson (1817)
First isolationWilliam Thomas Brande (1821)
Most stable isotopes of lithium
iso NA half-life DM DE (MeV) DP
6Li 7.5% 6Li is stable with 3 neutrons
7Li 92.5% 7Li is stable with 4 neutrons
6Li content may be as low as 3.75% in
natural samples. 7Li would therefore
have a content of up to 96.25%.
| references

References