MHT CET 2024 Chemistry question
Which element from following has largest atomic size as compared to other three ?
Answer: (B)
Solution
Across a period atomic size decreases (increasing effective nuclear charge), while down a group it increases (extra shell). Sulphur (period 3, group 16) and chlorine (period 3, group 17) are small: S pm, Cl pm. Selenium and bromine are both in
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