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Structure of At...

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  • Question 1
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    Which of the following statements is false?

  • Question 2
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    Atomic number of strontium $$(Sr)$$ is equal to:

  • Question 3
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    The electronic configuration of an element is $$1s^2, 2s^2 2p^6, 3s^2 3p^6 3d^5, 4s^1$$. This represents its :

  • Question 4
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    The atomic number of magnesium is 12. The number of protons in the nucleus of magnesium atom is:

  • Question 5
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    The electrons revolve around the nucleus only in certain fixed paths called:

  • Question 6
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    Atoms of two elements P and Q have 5 electrons in $$2^{nd}$$ shell and $$3^{rd}$$ shell respectively.  What will be the atomic numbers of these elements?

  • Question 7
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    If n = 6, the correct sequence for filling of electrons will be :

  • Question 8
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    The first use of quantum theory to explain the structure of atom was made by:

  • Question 9
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    Which of the following is true when Bohr gave his model for hydrogen atom?

  • Question 10
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    Following are the p-block elements.

    Atomic numbers : $$Ge$$ = 32  , $$As$$ = 33  , $$Se$$ = 34
    Which of the these elements belong to $$14^{th}$$ group and $$4^{th}$$ period?

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