Ionization Energy Worksheet
A Grade 11 Chemistry worksheet on Ionization Energy, including definitions, trends, and related concepts.
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Ionization Energy: Grade 11 Chemistry
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Read each question carefully and answer to the best of your ability. Show all work where applicable.
1. Ionization energy is the minimum amount of energy required to remove the most loosely bound from an isolated gaseous atom or ion.
2. The first ionization energy refers to the removal of the electron, while the second ionization energy refers to the removal of the second electron.
3. The general trend for ionization energy across a period (from left to right) is to .
4. The general trend for ionization energy down a group (from top to bottom) is to .
5. Which of the following elements would have the highest first ionization energy?
Potassium (K)
Fluorine (F)
Calcium (Ca)
Bromine (Br)
6. Why does the ionization energy generally increase across a period?
Increasing atomic radius
Decreasing nuclear charge
Increasing effective nuclear charge
Increasing shielding effect
7. It takes more energy to remove a second electron from an atom than it does to remove the first.
True
False
8. Noble gases have very low ionization energies due to their stable electron configurations.
True
False
9. Explain why the ionization energy decreases as you move down a group in the periodic table.
10. Compare and contrast the first ionization energies of sodium (Na) and chlorine (Cl). Explain your reasoning.
11. The image above shows a representation of an atomic structure. Briefly describe how the concept of ionization energy relates to the electrons within this structure.