First lonization potential of alkaline earth metal is greater than alkali metals because
Correct answer: B. They have greater atomic radii
- A. They are more reactive
- B. They have greater atomic radii
- C. They have smaller atomic sizes
- D. All
Explanation
Alkaline earth metals have larger atomic radii than alkali metals due to the presence of an additional energy level (n=3) with electrons.The larger atomic radius results in weaker attraction between the nucleus and the outermost electron (valence electron), making it harder to remove and thus requiring a higher first ionization potential.
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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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