Sulphur atom gains two electrons, phosphorus atom gains three electrons, calcium atom loses two electrons, iron atom loses three electrons. Write type of valency in above elements
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We all know that the chemical formula for water is H2O. How many times have we wondered why it is written as “H2O” and not something else? What is the reason for this particular formula? The answer to the above question is “Valency”. Let us know more about Valency and how it helps in determining a formula!
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