Which of the following group shows highest ionization potential?
Correct answer: D. Inert gases
- A. Alkali metals
- B. Transition metals
- C. Halogens
- D. Inert gases
Explanation
The correct answer is Option D: Inert gases. Inert gases, also known as noble gases, have a complete valence electron shell, which makes them exceptionally stable and gives them the highest ionization potentials. This is because removing an electron from a stable, complete shell requires a significant amount of energy. On the other hand, alkali metals have the lowest ionization potential as they can easily lose their single outermost electron to achieve a stable configuration. Transition metals and halogens have higher ionization potentials than alkali metals but not as high as inert gases.
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About Periodic Properties and Trends
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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