The decrease in atomic radii is very prominent in the _.
Correct answer: B. Second period
- A. Second group
- B. Second period
- C. Higher groups
- D. Higher periods
Explanation
The decrease in atomic radii is very prominent in the second period. As you go across any period the atomic number or proton number increases while electron shielding remains constant which means the nuclear attraction is increasing. Due to increased nuclear attraction, the outermost electrons on the valence shell get attracted by the nucleus hence atomic radii keep decreasing.
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