Which of the following halides of aluminium is predominantly covalent in nature?
Correct answer: A. AlI3
- A. AlI3
- B. AlCl3
- C. AlBr3
- D. AlF3
Explanation
Aluminum iodide (AlI3) is predominantly covalent due to the smaller electronegativity difference between aluminum and iodine, allowing for a greater sharing of electrons. The other options (AlCl3, AlBr3, and AlF3) have higher ionic character as the halogens (Cl, Br, and F) are more electronegative than aluminum, leading to a significant transfer of electrons and increased ionic character in the bonding.
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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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