Which of the following elements does not form any compound?
Correct answer: A. Neon
- A. Neon
- B. Krypton
- C. Xenon
- D. All of them form no compound.
Explanation
The correct answer is Neon. Neon is a noble gas that is known for its complete lack of chemical reactivity, making it highly unlikely to form compounds under normal conditions. In contrast, krypton and xenon, although noble gases, have been observed to form compounds, such as krypton difluoride and various xenon compounds, under specific conditions. Therefore, the option stating that all of them form no compound is incorrect.
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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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