The wavefunction which defines the properties (location etc) of an electron in an atom. We speak of an electron that obeys such a wavefunction as occupying the relevant orbital.

A region in space where electrons on an atom can be found.

a mode of behavior of an electron in an atom (see Electron orbital )

an electron position around an atomic nucleus, which in classical science parlance, one would say, is an orbit around an atomic nucleus in which the electron revolves

The regions in the space about the nucleus of an atom where an electron is most likely to be found.

A wavefunction that describes the behavior of an electron in an atom.

Representation of the electron cloud surrounding an atom. Named by primary quantum number and shape, i.e. 1s, 2s, 2p

the energy levels of electrons in an atom which may be described in terms of the four quantum numbers.

In physics and chemistry, an atomic orbital is the region in which an electron may be found around a single atom. Specifically, atomic orbitals are the quantum states of the individual electrons in the electron cloud around a single atom. Classically, the electrons were thought to orbit the atomic nucleus, much like the planets around the Sun (or more accurately, a moth orbiting very quickly around a lamp).