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((about|the physics of atomic lithium|other properties|Lithium))
((Multiple issues|
((More citations needed|date=June 2023))
((One source|date=June 2023))
))
[[File:Blausen 0615 Lithium Atom.png|thumb|Lithium atom]]
A '''lithium atom''' is an [[atom]] of the [[chemical element]] [[lithium]]. Stable lithium is composed of three electrons bound by the [[electromagnetic force]] to a nucleus containing three [[proton]]s along with either three or four [[neutron]]s, depending on the [[Isotopes of lithium|isotope]], held together by the [[strong force]]. Similarly to the case of the [[helium atom]], a closed-form solution to the [[Schrödinger equation]] for the lithium atom has not been found. However, various approximations, such as the [[Hartree–Fock method]], can be used to estimate the [[ground state]] energy and [[wavefunction]] of the atom. The [[quantum defect]] is a value that describes the deviation from [[hydrogenic]] energy levels.

==Further reading==

* [http://lsec.cc.ac.cn/~zwy/papers/lithium.pdf W. Zheng et al. / Appl. Math. Comput. 153 (2004) 685–695] "Numerical solutions of the Schrödinger equation for the ground lithium by the finite element method"

[[Category:Atoms]]
[[Category:Lithium]]

((Lithium compounds))

((nuclear-stub))

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