Practice: Determine the number of electrons that can have the following set of quantum numbers: n = 3, m_{l} = 0.

The **Quantum Numbers** can give both the quantity and location of electrons within a given atom.

Concept #1: Number of Electrons in Shells

Example #1: How many electrons can be found in the 7^{th }shell of an atom?

Concept #2: Number of Electrons in Subshells & Orbitals

Example #2: Determine the number of electrons that can be found in the 7^{th} shell and d sublevel.

Practice: Determine the number of electrons that can have the following set of quantum numbers: n = 3, m_{l} = 0.

Practice: Determine the number of electrons that can have the following set of quantum numbers: n = 2, m_{s} = –1/2.

Practice: Determine the number of electrons that can have the following set of quantum numbers.

n = 4, l = 3, m_{l} = – 1

Practice: Determine the number of electrons that can have the following set of quantum numbers.

n = 4, m_{L} = – 1, m_{s} = –1/2