Electron Orbitals Worksheet
Explore the fascinating world of electron orbitals with this Grade 10 chemistry worksheet, covering quantum numbers, orbital shapes, and electron configurations.
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Electron Orbitals: Grade 10 Chemistry
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
The image below illustrates the electron cloud model of an atom. The regions where electrons are most likely to be found are called orbitals.

1. An electron orbital is a region around the nucleus where there is a high probability of finding an .
2. The shape of an orbital is described by the quantum number.
3. The quantum number describes the energy level of an electron.
4. Which of the following orbitals is spherical in shape?
s orbital
p orbital
d orbital
f orbital
5. How many electrons can a single orbital hold?
1
2
6
10
6. Describe the main difference between electron shells and electron orbitals.
7. Explain what the principal quantum number (n) represents and its possible values.
8. All orbitals within the same electron shell have the same energy level.
True
False
9. A p orbital has a dumbbell shape.
True
False
Match the orbital type with its corresponding maximum number of electrons.
10. s orbital
a. 10 electrons
11. p orbital
b. 2 electrons
12. d orbital
c. 6 electrons