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Na, Mg and Al are the elements of the 3r...

Na, Mg and Al are the elements of the 3rd period of the Modern Periodic Table having group number 1, 2 and 13 respectively. Which one of these elements has the
largest atomic radius,
Justify your answer stating the reason for each.

Text Solution

Verified by Experts

Sodium (Na)
Reason -As we move from left to right in a period, the atomic radius decreases / increase in nuclear charge pulls the electrons closer to the nucleus reducing the atomic size.
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