Ionic radius decreases along the period due to:
Correct answer: B. Increase in nuclear charge
- A. Addition of a new shell
- B. Increase in nuclear charge
- C. High Ionization Energy
- D. Decrease in nuclear charge
Explanation
Across a period, effective nuclear charge increases as electron shielding remains constant. A higher effective nuclear charge causes greater attraction to the electrons, pulling the electron cloud closer to the nucleus which results in a smaller atomic radius.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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