Multiple Choice Questions on Which of these belong to the same period Element A B nb........... for 10th Standard Preparation

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Multiple Choice Questions

Which of these belong to the same period Element A B nb...........

Chemistry Chapter - 5
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    Which of these belong to the same period?
     
    Element            A    B     C
    Atomic number 2    10    5

    A, B

    Incorrect Answer

    B, C

    Correct Answer

    C, A

    Incorrect Answer

    A, B and C

    Incorrect Answer
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    Explanation:

    Reason. B= 10 (2, 8), C = 5 (2, 3) Both have 2 periods.

    By: santosh
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