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Question
How does the number of valency vary on moving from left to right in the third period of the periodic table?
Short/Brief Note
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Solution
The valency of the elements increases from 1 (Na) to 4 (Si) and then declines to O (Ar) as moving from left to right in the third period of the periodic table.
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Chapter 1: Periodic Table, Periodic Properties and Variations of Properties - lntext Questions [Page 5]
