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Helium atom
This article is about the physics of atomic helium. For other properties of helium, see
helium
.
A
helium atom
is an
atom
of the chemical element
helium
. Helium is composed of
two electrons
bound by the
electromagnetic force
to a nucleus containing two protons along with either one or two neutrons, depending on the
isotope
, held together by the
strong force
. Unlike for
hydrogen
, a closed-form solution to the
Schrödinger equation
for the helium 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.
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