JEE Main & Advanced Chemistry Classification of Elements and Periodicity in Properties Question Bank Valency and oxidation state

  • question_answer Beryllium and aluminium exhibit many properties which are similar. But, the two elements differ in [AIEEE 2004]

    A) Forming covalent halides

    B) Forming polymeric hydrides

    C) Exhibiting maximum covalency in compounds

    D) Exhibiting amphoteric nature in their oxides

    Correct Answer: C

    Solution :

    Beryllium has the valency of +2 while aluminum exhibits its valency as +3

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