Banking Chemistry Classification of Elements and Periodicity in Properties Question Bank Classification of Elements and Periodicity in Properties

  • question_answer 23) Which of the following elements A, B, C, D and E with atomic number 3, 11, 15, 18 and 19 respectively belong to the same group?

    A)  A, B, C                       

    B)  B, C, D

    C)  A, D, E            

    D)         A, B, E  

    Correct Answer: D

    Solution :

     A (Z = 3); B (Z - 11) and E (Z = 19) are all alkali metals.

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