Lithium Element

Lithium ElementIt is a chemical element with symbol Li and atomic number 3. Classified as an alkali metal, lithium is a solid at room temperature.
Lithium and its compounds have several industrial applications, including heat-resistant glass and ceramics, lithium grease lubricants, flux additives for iron, steel and aluminium production, lithium batteries, and lithium-ion batteries. These uses consume more than three quarters of lithium production.
Lithium element is present in biological systems in trace amounts; its functions are uncertain. Lithium salts have proven to be useful as a mood-stabilizing drug in the treatment of bipolar disorder in humans.
It does not occur freely in nature; combined, it is found in small units in nearly all igneous rocks and in many mineral springs. Lepidolite, spodumene, petalite, and amblygonite are the more important minerals containing it.
Lithium element is presently being recovered from brines of Searles Lake, in California, and from those in Nevada. Large deposits of quadramene are found in North Carolina. The metal is produced electrolytically from the fused chloride. Lithium is silvery in appearance, much like Na, K, and other members of the alkali metal series. It reacts with water, but not as vigorously as sodium. Lithium imparts a beautiful crimson color to a flame, but when the metal burns strongly, the flame is a dazzling white.

Names and Identifiers

Chemical Formula:Li
CAS:7439-93-2
Molecular Weight:6.941 g/mol
EC Number :231-102-5
MDL Number:MFCD00134051
Color:silvery white/gray
Other Names:n/a
PubChem CID:3028194
IUPAC Name:Lithium
Inchl:InChI=1S/Li
InChI Key:WHXSMMKQMYFTQS-UHFFFAOYSA-N
Canonical SMILES:[Li]
ICSC Number:0710

Physical & Chemical Properties

Phase:Solid
Density:0.534 g/cm³
Boiling Point:1603 K ​(1330 °C, ​2426 °F)
Melting Point:453.65 K ​(180.50 °C, ​356.90 °F)
Molecular Formula:Li
Flash Point:n/a
Exact Mass:n/a
Symbol:Globally Harmonized System of ClassificationGlobally Harmonized System of Classification
Signal Word:Danger
Hazard Statements:H260-H314
Precautionary Statements:P223-P231 + P232-P280-P305 + P351 + P338-P370 + P378-P422
Hazard Codes:C:Corrosive
Risk Phrases:R14/15;R34
Safety Phrases:S8-S43-S45-S43C-S36/37/39-S26
RIDADR:UN 3264 8/PG 3
WGK Germany:2
RTECS:OJ5540000
Packaging Group:I
Hazard Class:4.3

All of the remaining isotopes of lithium have half-lives that are shorter than 10 nanoseconds. The shortest-lived known isotope of lithium is lithium-4, which decays by proton emission with a half-life of about 9.1×10−23 seconds, although the half-life of lithium-3 is yet to be determined, and is likely to be much shorter, like helium-2 (diproton) which undergoes proton decay within 10−9 s.
Naturally occurring lithium (3Li) is composed of two stable isotopes, lithium-6 and lithium-7, with the latter being far more abundant: about 92.5 percent of the atoms.
Both of the natural isotopes have an unexpectedly low nuclear binding energy per nucleon (~5.3 MeV) when compared with the adjacent lighter and heavier elements, helium (~7.1 MeV) and beryllium (~6.5 MeV). The longest-lived radioisotope of lithium is lithium-8, which has a half-life of just 839.4 milliseconds. Lithium-9 has a half-life of 178.3 milliseconds, and lithium-11 has a half-life of about 8.75 milliseconds.
Lithium-7 and lithium-6 are two of the primordial nuclides that were produced in the Big Bang, with lithium-7 to be 10−9 of all primordial nuclides and amount of lithium-6 around 10−13.
A small percentage of lithium-6 is also known to be produced by nuclear reactions in certain stars. The isotopes of lithium separate somewhat during a variety of geological processes, including mineral formation (chemical precipitation and ion exchange). Lithium ions replace magnesium or iron in certain octahedral locations in clays, and lithium-6 is sometimes preferred over lithium-7. This results in some enrichment of lithium-7 in geological processes.
Lithium-6 is an important isotope in nuclear physics because when it is bombarded with neutrons, tritium is produced.

Naturally occurring isotopes

IsotopeMass/DaNatural abundance (atom %)Nuclear spin (I)Magnetic moment (μ/μN)
6Li6.015 122 3(5)[7.59 (4)]10.8220467
7Li7.016 004 0(5)[92.41 (4)]3/23.256424

Radiosotope data

IsotopeMass/DaHalf-lifeMode of decayNuclear spinNuclear magnetic moment
8Li8.0224860.84 sβ to 8Be; β + 2α to n21.6536
9Li9.0267890.178 sβ to 9Be; β + n to 8Be; β + n + 2α to n3/23.439
11Li11.043790.0087 sβ to 11Be; β + n to 10Be; β + n + α to 6He1/23.668

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