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The p-Block Ele...

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  • Question 1
    1 / -0

    What the covalency of phosphorous atom in excited state ?

  • Question 2
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    Which of the following order regarding the melting point is correct? 

  • Question 3
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    The most abundant IV A group element in the earth's  crust is :

  • Question 4
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    Oxidation state of carbon in HCN and HNC is respectively:-

  • Question 5
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    Borax when dissolved in water exhibts

  • Question 6
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    Aluminium becomes passive when treated with______

  • Question 7
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    Average atomic weight of boron is $$10.10$$ and boron exists in two isotopic forms $$B^{10}$$ and $$B^{11}$$. The percentage abundance of $$B^{10}$$ is?

  • Question 8
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    Which of the following compound is amphoteric?

  • Question 9
    1 / -0

    The relative stability of +1 oxidation state of group 13 elements follows the order:

  • Question 10
    1 / -0

    Maximum covalency shown by boron is:

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