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  • Question 1
    4 / -1

    Increase in atomic size down the group is due to

  • Question 2
    4 / -1

    The electron affinity values (in kJ mol -1) of three halogens X, Y and Z are respectively -349, - 333 and -325. Then, X, Y and Z respectively, are

  • Question 3
    4 / -1

    Which one of the following is an amphoteric oxide?

  • Question 4
    4 / -1

    The first ionisation potential of Na, Mg, Al and Si are in the order

  • Question 5
    4 / -1

    Ionic radius is

  • Question 6
    4 / -1

    Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species ?

  • Question 7
    4 / -1

    The electronic configuration of most electronegative elements is

  • Question 8
    4 / -1

    Which one of the following ions has the highest value of ionic radius ?

  • Question 9
    4 / -1

    Pauling's equation for determining the electronegativity of an element, is
    where, XA, XB = electronegativity values of elements A and B, ∆ = represents polarity of A-B bond.

  • Question 10
    4 / -1

    The ionic radius (Å) of C4- and O2- respectively, are 2.60 and 1.40. The ionic radius of the isoelectronic ion N3- would be

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