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Lewis Dot Structure

Q. An element...

Question

Q. An element 'X' belongs to third period and group 17 of periodic table. State its electronic configuration and valency. Justify your answer.

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Solution

Element X is Cl which belongs to group 17 and period 3. Group 17 elements have valency of 1.
Element Y has valency 3.
YCl₃or YX₃
Since Cl has valency 1.

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