How to Calculate Valency: A Simple Guide

Learn how to calculate valency using basic principles of electron configuration.

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Valency is calculated by determining the number of electrons an atom needs to gain, lose, or share to fill its outermost shell (achieve octet). For example, if an atom has 5 electrons in its outer shell, it needs 3 more electrons to complete the shell, giving it a valency of 3.

FAQs & Answers

  1. What is valency in chemistry? Valency refers to the number of electrons an atom needs to gain, lose, or share to achieve a stable electronic configuration.
  2. Why is octet rule important in calculating valency? The octet rule is crucial because it dictates how many electrons an atom needs to fill its outer shell, determining its valency.
  3. How does the valency of an atom affect its chemical properties? The valency influences how an atom will bond with others, affecting its reactivity and the types of compounds it can form.