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SS2: CHEMISTRY - 3RD TERM

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  1. Hydrogen and its Compounds | Week 1
    7 Topics
    |
    1 Quiz
  2. Oxygen and its Compounds | Week 2
    7 Topics
    |
    1 Quiz
  3. Halogens, Chlorine and its Compounds | Week 3
    7 Topics
    |
    1 Quiz
  4. Hydrogen Chloride and Hydrochloric Acid | Week 4
    5 Topics
    |
    1 Quiz
  5. Nitrogen and Its Compounds | Week 5
    9 Topics
    |
    1 Quiz
  6. Ammonia | Week 6
    9 Topics
    |
    1 Quiz
  7. Sulphur and its Compounds | Week 7
    13 Topics
    |
    1 Quiz
  8. Hydrocarbons | Week 8
    12 Topics
    |
    1 Quiz
  9. Alkanols | Week 9
    4 Topics
    |
    1 Quiz
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Topic Content:

  • Crystalline Sulphur
    • Rhombic Sulphur
    • Monoclinic Sulphur
  • Amorphous Sulphur

There are crystalline and amorphous allotropes of sulphur.

1. Crystalline Sulphur:

Sulphur occurs in two crystalline forms: rhombic sulphur and monoclinic sulphur.

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a. Rhombic Sulphur:

Free sulphur exists as rhombic sulphur in nature. This is the form of sulphur stable at temperatures below 96°C. Crystals of this allotrope of sulphur are bright and octahedral. They consist of an S8 ring of atoms.

 

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