**Part A**

The principal quantum number, n = 5.

The possible values for l = 0, 1, 2, 3, 4

Part A.

How many different values of *l* are possible for an electron with principal quantum number *n* = 5?

Express your answer as an integer.

Part B.

How many values of *m*l are possible for an electron with orbital quantum number *l* = 2?

Express your answer as an integer.

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