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11th Standard English Medium Chemistry Subject Periodic Classification of Elements Creative 3 Mark Questions with Solution Part - I updated Creative Questions

11th Standard English Medium Chemistry Subject Periodic Classification of Elements Creative 3 Mark Questions with Solution Part - I

11th Standard

    Reg.No. :
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Chemistry

Time : 00:30:00 Hrs
Total Marks : 15
    5 x 3 = 15

  1. Name the third chalcogen and fifth noble gas

  2. Lanthanoids and actinoids are placed in separate rows at the bottom of the periodic table. Explain.

  3. Helium has a electronic configuration of 1s2 but placed in p block in group 18. Justify.

  4. Describe in brief Lothar Meyer's classification of elements.

  5. Explain classification of elements based on Newland's law of Octaves.

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