outermost shell is sometimes called the valence shell. This is the shell where the electrons are involved in reactions.
sub-shell covers the slight differences in energy of various orbitals in each of these levels
principle quantum number (n). This is the posh name for the over-all energy level
electrons in the 1-level, have a principle quantum number of 1. In the 3-level they all have the principle quantum number of 3.
When we write electronic structures for atoms or ions, electrons always go into the lowest energy levels available
ground state of the atom.
possible to excite electrons to higher levels by putting in energy
fall back to their original ground state releasing energy again.
free radicals as any species with one or more unpaired electrons
can include atoms, ions and molecules.
chlorine radical is just an isolated chlorine atom which has 7 electrons in its outer level.
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