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Structure of th...

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  • Question 1
    1 / -0

    Neon and chlorine have atomic numbers $$10$$ and $$17$$ respectively. Their valencies will be ______ and ______ respectively.

  • Question 2
    1 / -0

    Gold is chosen by Rutherford for his $$\alpha$$-ray scattering experiment because:

  • Question 3
    1 / -0

    The conclusion of Rutherford from his $$\alpha$$-ray scattering experiment is:

  • Question 4
    1 / -0

    The gap between electron and nucleus(proton) in hydrogen atom is:

  • Question 5
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    The atomic number of calcium and argon are 20 and 18 respectively, but the mass number of both these elements is 40. What is the name given to such a pair of elements?

  • Question 6
    1 / -0

    Which of the following statements is NOT true?

  • Question 7
    1 / -0

    Find out the valency of the atoms represented by the figure.

  • Question 8
    1 / -0

    Rutherford's $$\alpha-$$ particle scattering experiment led to the discovery of:

  • Question 9
    1 / -0

    $$_{18}Ar^{40}$$ and $$_{19}K^{40}$$ are a pair of:

  • Question 10
    1 / -0

    Size of the nucleus is:

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