Be and Al exhibit many properties which are similar. But the two elements differ in:
Correct answer: D. Exhibiting maximum covalence in compounds
- A. Exhibiting amphoteric nature of oxides
- B. Forming polymeric hydrides
- C. Forming covalent halides
- D. Exhibiting maximum covalence in compounds
Explanation
The correct answer is that Be and Al differ in exhibiting the maximum covalency in compounds. Beryllium (Be) has a maximum covalency of 4 due to the absence of d-orbitals, while aluminum (Al) can exhibit a covalency of up to 6 because it has vacant d-orbitals. This difference is a result of their electronic configurations. The other options are incorrect because they do not address this specific difference between Be and Al in terms of covalency in compounds.
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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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