Electron Configuration And Noble Gas Notation Practice Worksheet With Answers
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Electron Configuration and Noble Gas Notation Practice
We’ve seen that electron configurations may be shown using an energy level diagram (orbital filling diagrams),
electron configuration notation or noble gas configuration, or electron dot notation. This worksheet will allow
you to practice these various methods for atoms and ions.
PART I:
ELEMENT: Ca
2
2
6
2
6
2
1. Write the full electron configuration.
___1s
2s
2p
3s
3p
4s
__
2. How many valance electrons does Ca have?
2
3. Write the electron dot notation to show the valence electrons.
2
4. Write the noble gas configuration.
___[Ar]4s
___________________________________
5. When calcium loses 2 electrons, it will have the same configuration as the noble gas Argon. This means
that Ca will have a full octet and will be more stable as an ion.
ELEMENT: Mn
2
2
6
2
6
2
5
1. Write the full electron configuration.
___1s
2s
2p
3s
3p
4s
3d
_
2. How many valence electrons does Mn have?
2
3. Write the electron dot notation to show the valence electrons.
2
5
4. Write the noble gas configuration.__
___[Ar]4s
3d
_____
PART II:
Write the full electron configuration for the following elements
2
2
6
2
2
Example: Silicon 1s
2s
2p
3s
3p
2
2
6
2
5
1. Chlorine
1s
2s
2p
3s
3p
2
2
6
2
6
2
10
4
2. Selenium
1s
2s
2p
3s
3p
4s
3d
4p
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