Question #06a54

1 Answer
Mar 20, 2017

Answer:

Electrons move between principle energy levels primarily through excitation by external energy sources such as heat or radiation particles.

Explanation:

An “excited” state is always unstable, and the electron will return to its more stable level with the release of energy, usually in the form of light. The sub-shells are similar in type (s,p,d,f) and geometry in all principle levels (1,2,3,4). Only their energies relative to the nucleus are different.
See also: http://chemistry.tutorcircle.com/inorganic-chemistry/electronic-configuration.html
And here: http://chemistry.tutorvista.com/inorganic-chemistry/electronic-configuration.html
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