Which of the following element doesnot show allotropy_________________?
Correct answer: C. Nitrogen
- A. Carbon
- B. Arsenic
- C. Nitrogen
- D. Sulphur
Explanation
Carbon, arsenic and sulphur exist in different structural forms called allotropes, but nitrogen is normally found as N2 and is not regarded as an element showing allotropy in this context. The likely mistake is choosing carbon because its allotropes are the most widely known, while overlooking that carbon clearly does show allotropy.
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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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