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Give the Formulae of the Compounds Formed from the Following Sets of Elements : Calcium and Fluorine Hydrogen and Sulphur Nitrogen and Hydrogen Carbon and Chlorine Sodium and Oxygen Carbon and Oxygen - Science

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Short Note

Give the formulae of the compounds formed from the following sets of elements :

  1. calcium and fluorine
  2. hydrogen and sulphur
  3. nitrogen and hydrogen
  4. carbon and chlorine
  5. sodium and oxygen
  6. carbon and oxygen
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Solution

  1. Compound formed with calcium and fluorine will have the chemical formula CaF2. (valency of Ca is 2 and that of F is 1)
  2. Compound formed with hydrogen and sulphur will have the chemical formula H2S. (valency of S is 2 and that of H is 1)
  3. Compound formed with nitrogen and hydrogen will have the chemical formula NH3. (valency of N is 3 and that of H is 1)
  4. Compound formed with carbon and chlorine will have the chemical formula CCl4. (valency of C is 4 and that of Cl is 1)
  5. Compound formed with sodium and oxygen will have the chemical formula Na2O. (valency of Na is 1 and that of O is 2)
  6. Compound formed with carbon and oxygen will have the chemical formula CO2. (valency of C is 4 and that of O is 2, divided by the common factor of 2)
Concept: Chemical Formula Or Molecular Formula
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APPEARS IN

Lakhmir Singh Class 9 Chemistry - Science Part 2
Chapter 3 Atoms and Molecules
Short Answers | Q 24 | Page 151
NCERT Science Exemplar Class 9
Chapter 3 Atoms and Molecules
Short Answer Questions | Q 15. | Page 21

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