Electron Configuration Worksheet
Grade 9 Science worksheet on electron configuration, including Bohr models, orbital notation, and valence electrons.
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Electron Configuration Worksheet
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Date:
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Read each question carefully and answer to the best of your ability. Show all your work where applicable.
1. What is electron configuration and why is it important in chemistry?
2. State the Pauli Exclusion Principle and Hund's Rule in your own words.
1. The maximum number of electrons that can occupy the first energy level is .
2. The rule states that electrons fill orbitals of the lowest energy first.
3. Valence electrons are found in the energy level of an atom.
4. The letter 'p' in an electron configuration represents a subshell that can hold a maximum of electrons.
1. Which of the following elements has the electron configuration 1s²2s²2p⁶3s²3p¹?
Boron
Aluminum
Phosphorus
Silicon
2. How many valence electrons does an atom with the electron configuration 1s²2s²2p⁶3s²3p⁴ have?
2
4
6
8
1. Draw a Bohr model for a Neon atom (Atomic Number = 10).
1. All electrons in an atom occupy the same energy level.
True
False
2. The 's' orbital can hold a maximum of 6 electrons.
True
False
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