Term 2 Periodic classification of elements Two Marks Questions

9th Standard

    Reg.No. :
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Science

Time : 00:45:00 Hrs
Total Marks : 20
    10 x 2 = 20
  1. State modern periodic law.

  2. What are s-block elements?

  3. What are p-block elements?

  4. What are alloys?

  5. What are metalloids? Give examples

  6. State Mendeleev's Law of Periodicity

  7. State Newlands' Law of Octaves

  8. An element has atomic number 12.
    a) Write the electric configuration.
    b) To which group and period does it belong.

  9. Group 1 (except hydrogen) elements are called alkali metals

  10. Group 3-12 elements in the modern periodic table are called d block elements.

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