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11th Standard English Medium Chemistry Subject Periodic Classification of Elements Book Back 2 Mark Questions with Solution Part - I

11th Standard

    Reg.No. :
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Chemistry

Time : 00:30:00 Hrs
Total Marks : 10

    Part I

    5 x 2 = 10
  1. What is effective nuclear charge?

  2. Is the definition given below for ionisation enthalpy correct?
    "Ionisation enthalpy is defined as the energy required to remove the most loosely bound electron from the valence shell of an atom.

  3. Magnesium loses electrons successively to form Mg+, Mg2+ and Mg3+ ions. Which step will have the highest ionisation energy and why?

  4. Define electro negativity.

  5. Give the general electronic configuration of lanthanides and actinides.

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