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The p-Block Elements Test - 4

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The p-Block Elements Test - 4
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Weekly Quiz Competition
  • Question 1
    1 / -0

    The elements of group 14 are slightly more electronegative than group 13 elements because of

    Solution

    As we move along the period electronegativity increases due to increase in nuclear charge and decrease in size.

  • Question 2
    1 / -0

    In general, non-metals as compared to metals have

    Solution

    Non metals have high value of ionization energy while metals have comparatively low value of ionization energy.
    As we move across a period (Metal are there in left hand side and nonmetals are there in right hand side),  the ionization energy of an element increases. This is because the effective nuclear charge increases.

  • Question 3
    1 / -0

    The compounds formed by highly reactive non-metals with highly reactive metals are generally

    Solution

    Compounds formed by highly reactive non-metals and metals is ionic bond. Here metal will loose electron to form cation and nonmetal will gain electron to form anion.

  • Question 4
    1 / -0

    The non-metal oxides are:

    Solution

    nonmetallic oxides are either neutral or acidic. Example CO, NO, H2O are neutral while CO2 is acidic.

  • Question 5
    1 / -0

    The element having the noble gas plus 14 f- electrons plus 10 d-electron cores

    Solution

    Thallium has noble gas + 14 f +10 d electrons.

    [Xe] 4f14 5d10 6s2 6p1  . Thus the electronic structure of thees  element is more complex.

  • Question 6
    1 / -0

    The element having the noble gas plus 10 d-electron cores

    Solution

    Both gallium and Indium has noble gas + 10 d electrons

    [Ar] 3d10 4s2 4p1   and   [ Kr] 4d105s25p1  respectively

  • Question 7
    1 / -0

    Which of the following is a Lewis acid?

    Solution

    AlCl3is lewis acid. Group 13 halides are lewis acid because of having incompletely filled orbitals.

  • Question 8
    1 / -0

    Which of the following oxides is acidic in nature?

    Solution

    As we down the group metallic character increases. So most acidic oxide is the oxide of most non metallic element, i.e. B2O3

  • Question 9
    1 / -0

    Boron from covalent Compound due to

    Solution

    higher ionisation enthalpy and Small size

  • Question 10
    1 / -0

    The geometry of a complex species can be understood from the knowledge of type of hybridisation of orbitals of central atom. The hybridisation of orbitals of central atom in [Be(OH)4] and the geometry of the complex are respectively.

    Solution

    In [Be(OH)4 ]   Be is tetrahedrally surrounded by 4 OH- ion.

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