Concept Check: e configs and orbital diagrams

Front

What does the '1' represent in the electron configuration 1s²?

Back

Energy level.

Front

How many electrons are represented in the configuration 1s² 2s² 2p⁶ 3s²?

Back

12 electrons.

Front

What is the total number of electrons in the configuration [Xe] 6s²?

Back

56 electrons.

Front

Which element has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶?

Back

Krypton.

Front

In the configuration 1s² 2s² 2p⁶, how many electrons are in the 2p sublevel?

Back

6 electrons.

Front

What does the superscript in an electron configuration (e.g., 2 in 1s²) indicate?

Back

The number of electrons in that orbital.

Front

How many total electrons are in the configuration 1s² 2s² 2p⁶ 3s² 3p⁶?

Back

18 electrons.

Front

What is the maximum number of electrons that can occupy the 3rd energy level?

Back

18 electrons.

Front

What is the electron configuration for the element with atomic number 20?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰.

Front

What is the significance of the electron configuration in understanding an element's chemical properties?

Back

It helps predict how an element will react chemically.