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SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-16

  • question_answer
    How many elements are there in the 5th period of modern periodic table?

    A) 2                                 

    B) 8

    C) 18                                

    D) 36

    Correct Answer: C

    Solution :

    The fifth period of modem periodic table contain 18 elements. In Periodic Table, elements are arranged in order of their Atomic Number. The Atomic Number is number of Protons each atom has in its Nucleus. Hydrogen is the first element. There are 18 groups in the Periodic Table.


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