PPT Slide

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Determining m l for each l value:

For l = 0, m l = 0

For l = 1, m l = +1, 0, –1

For l = 2, m l = +2, +1, 0, –1, –2

Since there are nine m l values, there are nine orbitals with n = 3.

• The total number of orbitals for a given n value is n2 .

• The atom’s energy levels, or shells, are given by the n value.

• The n = 1 shell has lower energy and a greater probability of  the electron being closer to the nucleus than higher shells.

• The atom’s sublevels, or subshells, are given by the n and l values.  Each shell contains subshells that designate the shape of the orbital.

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