What element corresponds to the electron configuration [Ar] 4s^2 3d^10 4p^6?

The given electron configuration is [Ar] 4s² 3d¹⁰ 4p⁶. To interpret this configuration, it's essential to break down its components:

1. [Ar] represents the electron configuration up to Argon, which accounts for the first 18 electrons.

2. 4s² indicates that there are 2 electrons in the 4s subshell.

3. 3d¹⁰ shows a completely filled 3d subshell with 10 electrons.

4. 4p⁶ signifies that the 4p subshell is also fully filled with 6 electrons.

Now, when you add the electrons from each part:

• Argon contributes 18 electrons (1s² 2s² 2p⁶ 3s² 3p⁶).

• The 4s adds 2 more, bringing the total to 20.

• The 3d contributes 10, which increases the total to 30.

• Finally, the 4p adds 6, resulting in a total of 36 electrons.

An element with 36 electrons corresponds to its atomic number, making it Krypton. Krypton is a noble