Among LiCI, BeCl2, NaCl, CsCI, the compounds with the greatest and the least ionic character respectively are:
Correct answer: D. CsCI and BeCl2
- A. LiCl and CsCI
- B. NaCl and LiCI
- C. CsCI and NaCl
- D. CsCI and BeCl2
Explanation
To determine the compounds with the greatest and the least ionic character, we need to consider the electronegativity difference between the elements involved. Compounds with a larger electronegativity difference tend to have a greater ionic character, while compounds with a smaller electronegativity difference tend to have a greater covalent character. The electronegativity difference between Cs and Cl is larger than that between Be and Cl. Therefore, CsCl has the greatest ionic character, and BeCl2 has the least ionic character.
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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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