Keeping in view the size of atoms, which order is correct?
Correct answer: D. Li > Be
- A. N > C
- B. P > Si
- C. Ar > Cl
- D. Li > Be
Explanation
Option D is correct because Lithium (Li) and Beryllium (Be) are in the same period, with Li positioned to the left of Be. As you move from left to right within a period, the atomic size decreases due to the increase in nuclear charge, which pulls electrons closer to the nucleus. Therefore, Li has a larger atomic size than Be.The other options are incorrect because they either misrepresent the relative sizes based on periodic trends or misplace elements in different periods or groups without considering the correct periodic trend.
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