# Which of the following is not a valid set of quantum numbers? A) n = 3, l = 0, ml = 0, and ms = 1/2 B) n = 2, l = 1, ml = -1, and ms = -1/2 C) n = 3, l = 2, ml = 3, and ms = 1/2 D) n = 2, l = 1, ml = 0, and ms = -1/2

##### 1 Answer

Apr 16, 2015

The answer is **C)**.

The **magnetic quantum number**, or

For option **C)**, the angular momentum quantum number of equal to ++2**, which means that #m_l# can have a maximum value of **+2

**. Since it is given as having a value of**+3**, this set of quantum numbers is not a valid one.

The other three sets are valid and can correctly describe an electron.