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Electron Configurations Page 4

Model 3 – Orbital Diagram for an Atom of Element X

10. Consider the orbital diagram in Model 3.

How many electrons are there in one atom of element X? _____________

Identify element X and provide its ground state electron configuration. Assume the atom is

neutral.

 Identity: ______________________________

 Ground state electron configuration: _____________________________________

Which rule does this orbital diagram violate? ______________________________________

If there is nothing wrong with the orbital diagram, what is a possible explanation for how the

diagram looks? _____________________________________________________________

_________________________________________________________________________

Extension Questions – SCHOLARS ONLY

Read This! An excited state electron configuration is any electron configuration for an atom that contains the correct total

number of electrons but has a higher total electron potential energy than the ground state electron configuration.

11. Write an electron configuration for element X that shows the atom in a different excited state than the one illustrated in Model 3.

____________________________________________________________________________________________________

12. Each orbital diagram shown below describes an excited state of an atom of a different element. Use the orbital diagrams to

complete the table.

Orbital Diagram

Excited state electron

configuration

Identify the element

Ground state electron

configuration

13. Complete the table for each of the excited state electron configurations given.

Excited state

Ground state electron

electron

Element name

Orbital diagram for ground state

configuration

Electron Configurations Page 4