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Question

The molecular formula of calcium chloride.


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Solution

  • Molecular formula: The molecular formula expresses the number of atoms of each element in one chemical molecule.
  • Valency: The number of electrons donated or accepted by an atom of an element so as to have 8 electrons in its outermost shell is called its valency.
  • In calcium chloride, the valency of calcium(Ca) is 2 and chlorine(Cl) is 1
  • Thus, the molecular formula of calcium chloride: CaCl2

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