Which of the following statements is incorrect about general characteristic of alkaline earth metals down the group?
Correct answer: C. Electropositive character decreases from Be to Ra
- A. The atomic and ionic radii increase from Be to Ra
- B. Hardness of alkaline earth metals decreases from Be to Ra
- C. Electropositive character decreases from Be to Ra
- D. Melting and boiling points generally decrease from Be to Ra
Explanation
The correct statement is that the atomic and ionic radii increase from Be to Ra. This is because as you move down the group, the number of electron shells increases, leading to larger atomic and ionic radii. The other options are incorrect because the hardness of alkaline earth metals decreases, electropositivity increases, and melting and boiling points generally decrease as you move down the group.
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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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