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P - Block Eleme...

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  • Question 1
    4 / -1

    CN− ion and N2 are isoelectronic but in contrast to CN− , N2 is chemically inert because of

  • Question 2
    4 / -1

    Nitrogen is relatively inactive element because

  • Question 3
    4 / -1

    By the action of hot conc. H2SO4, phosphorus changes to

  • Question 4
    4 / -1

    The sequence of acidic character is

  • Question 5
    4 / -1

    BCl3 is a planar molecule whereas NCl3 is pyramidal because

  • Question 6
    4 / -1

    Which of the following is a cyclic phosphate ?

  • Question 7
    4 / -1

    Which of the following has least covalent P- H bond ?

  • Question 8
    4 / -1

    The basic character of hydrides of the 15 group elements decreases in the order

  • Question 9
    4 / -1

    The stability of the hydrides follows the order

  • Question 10
    4 / -1

    In the P3‒ , S2‒ and Cl‒ ions the increasing order of size is

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