Valency explains how atoms connect, affecting the molecule's properties. Oxygen's valency of two allows it to form water with hydrogen.
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Bond Strength
Higher valency can indicate stronger bonds in forming stable molecules. Carbon has a valency of four, making it a versatile building block in organic chemistry.
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Valency Change
Valency can vary with the type of chemical reaction or compound formation. The valency of iron changes in different oxidation states, affecting its reactivity.