Which of the following has highest ionization energy?
Correct answer: D. S
- A. Al
- B. Si
- C. P
- D. S
Explanation
Sulfur is located below phosphorus in the periodic table, in the same group (Group 16). It has the highest ionization energy among the options provided because it is located further down the group, and its valence electrons are farther from the nucleus, making them easier to remove.
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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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