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How does valency vary across the period?...

How does valency vary across the period?

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### Step-by-Step Solution: 1. **Understanding Valency**: Valency is defined as the combining capacity of an element with other elements. It indicates how many electrons an atom can lose, gain, or share when it forms a chemical bond. 2. **Periodic Table Overview**: The periodic table is organized into periods (horizontal rows) and groups (vertical columns). Each period contains elements with increasing atomic numbers. 3. **Valency in Groups**: - Group 1 elements (e.g., Hydrogen, Lithium, Sodium) have a valency of 1. ...
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