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Solving Problems: A Chemistry Handbook
Chemistry: Matter and Change
47
SOLVING PROBLEMS:
A CHEMISTRY HANDBOOK
CHAPTER
5
Practice Problems
10. When writing the electron configuration of an atom, in what
general order are the sublevels written?
11. How is the number of electrons in an energy sublevel indicated
in an electron configuration?
12. Write the electron configurations of the following elements.
a. sulfur
b. calcium
c. bromine
d. magnesium
To place energy sublevels in order of increasing energy, it is useful
to learn the following energy sublevel diagram. By following the
arrows, you can write the energy sublevels in the correct order.
1s
2s
2p
3s
3p
3d
4s
4p
4d
4f
5s
5p
5d
5f
6s
6p
6d
7s
7p