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Topic 3
. - The Atomic Structure
14. Electron configuration: Determining maximum number of electrons in an electron shell
1. What is the maximum number of electrons that can occupy the second energy level of an atom?
1) 2 2) 8 3) 7 4) 17
th
2. What is the most number of electrons that can be found in the 4 energy level of an atom?
1) 2 2) 8 3) 18 4) 32
3. Which electron shell of an atom can hold a maximum of 72 electrons? th
th
th
th
1) 7 shell 2) 6 shell 3) 5 shell 4) 4 shell
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15. Electron configuration: Determining number of electrons from configuration
Teacher Preview Copy
rd
1. How many electrons are in the 3 electron shell of a neutral strontium atom in the ground state?
3) 8
2) 3
1) 2
4) 18
2. What is the number of electrons in the second electron shell of a ground state atom of calcium?
1) 1
4) 20
2) 2
3) 8
th
3. How many electrons are found in the 5 electron shell of an element with atomic number of 52?
3) 8
4) 18
2) 5
1) 6
nd
4. The element with atomic number of 9 has how many electrons in the 2 energy level?
1) 2 2) 7 3) 9 4) 8
5. The total number of electrons found in the configuration of a neutral chromium atom is
1) 24 2)6 3)13 4) 1
6. In the electron configuration 2 – 8 – 18 – 18 – 1, how many electrons are in the the electron shell
with the least amount of energy?
1) 1 2) 2 3) 8 4) 18
7. What is the total number of electron in the atom with a configuration of 2 – 8 -18 – 4?
1) 2 2) 18 3) 32 4) 28
8. How many total electrons are in the configuration 2 – 2 – 1 ? 4) 5
3) 4
2) 2
1) 1
9. Which electron shell of a potassium atom in the ground state contains a total of 1 electron?
1) 1 2) 2 3) 3 4) 4
10. An atom in the ground state has a configuration of 2 – 8 – 18 - 3. Which electron shell of this atom
contains a total of three electrons?
1) 1 2) 2 3) 3 4) 4
174 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
. - The Atomic Structure
14. Electron configuration: Determining maximum number of electrons in an electron shell
1. What is the maximum number of electrons that can occupy the second energy level of an atom?
1) 2 2) 8 3) 7 4) 17
th
2. What is the most number of electrons that can be found in the 4 energy level of an atom?
1) 2 2) 8 3) 18 4) 32
3. Which electron shell of an atom can hold a maximum of 72 electrons? th
th
th
th
1) 7 shell 2) 6 shell 3) 5 shell 4) 4 shell
Teacher Preview Copy
15. Electron configuration: Determining number of electrons from configuration
Teacher Preview Copy
rd
1. How many electrons are in the 3 electron shell of a neutral strontium atom in the ground state?
3) 8
2) 3
1) 2
4) 18
2. What is the number of electrons in the second electron shell of a ground state atom of calcium?
1) 1
4) 20
2) 2
3) 8
th
3. How many electrons are found in the 5 electron shell of an element with atomic number of 52?
3) 8
4) 18
2) 5
1) 6
nd
4. The element with atomic number of 9 has how many electrons in the 2 energy level?
1) 2 2) 7 3) 9 4) 8
5. The total number of electrons found in the configuration of a neutral chromium atom is
1) 24 2)6 3)13 4) 1
6. In the electron configuration 2 – 8 – 18 – 18 – 1, how many electrons are in the the electron shell
with the least amount of energy?
1) 1 2) 2 3) 8 4) 18
7. What is the total number of electron in the atom with a configuration of 2 – 8 -18 – 4?
1) 2 2) 18 3) 32 4) 28
8. How many total electrons are in the configuration 2 – 2 – 1 ? 4) 5
3) 4
2) 2
1) 1
9. Which electron shell of a potassium atom in the ground state contains a total of 1 electron?
1) 1 2) 2 3) 3 4) 4
10. An atom in the ground state has a configuration of 2 – 8 – 18 - 3. Which electron shell of this atom
contains a total of three electrons?
1) 1 2) 2 3) 3 4) 4
174 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
