3 Questions
Which of the following best defines ionization energy?
The energy required to remove an electron from a neutral atom
Which of the following factors affect the ionization energy of an atom?
Number of protons
Which of the following trends is observed for ionization energy across a period in the periodic table?
Increases from left to right
Study Notes
Ionization Energy
- Ionization energy is the minimum energy required to remove the outermost electron from a neutral atom in its ground state.
Factors Affecting Ionization Energy
- Atomic radius: as atomic radius decreases, ionization energy increases
- Electron shielding: effective nuclear charge increases as electron shielding decreases, resulting in higher ionization energy
- Nuclear charge: as nuclear charge increases, ionization energy increases
Trends in Ionization Energy
- Across a period, ionization energy generally increases from left to right due to increasing nuclear charge and decreasing atomic radius.
Test your knowledge on ionization energy with this quiz. Learn about the definition of ionization energy, factors that affect it, and the trends observed across a period in the periodic table.
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