State the postulates of Dalton's atomic theory.
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The allowable combination for the atomic orbital is n=4, l=2, =2.
Three quantum numbers specify an atomic orbital:
- The principal quantum number, n, which is a positive integer, describes the relative size of the orbital and its distance from the nucleus.
- l is the angular momentum quantum number that is related to the shape of the orbital; l is an integer from 0 to n-1 (so n limits l ),
- is the magnetic quantum number that prescribes the three-dimensional shape of the orbital around the nucleus;
values are integers from -l to =l(l limits ml)
For n = 4, l can four values: 0, 1, 2, and 3. To be consistent with =+2the l value must be higher than 1. There are two l values that are consistent with n and
values: l= 2 or 3
Therefore, the allowable condition is n=4, l=2, =2
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