Which of the following is a periodic property?
Correct answer: D. All of the above
- A. Atomic volume
- B. Metallic character
- C. Ionization energy
- D. All of the above
Explanation
The correct answer is 'All of the above' because each property listed-atomic volume, metallic character, and ionization energy-is a periodic property. Atomic volume changes predictably due to shifts in atomic radius and electron configuration. Metallic character diminishes across a period due to increasing non-metallic properties and escalates down a group as elements become more metallic. Ionization energy trends upwards across a period, driven by increased nuclear charge, and declines down a group due to greater atomic radius and electron shielding. Thus, option D is correct as all these properties demonstrate periodic trends.
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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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