Question

explain why atomic radius decreases along A period​

Answer 1

Explanation:

ATOMIC RADIUS DECREASES ALONG THE PERIOD WHEN WE GO FROM LEFT TO RIGHT THIS IS BECAUSE THE NUMBER OF ELECTRON IN OUTERMOST ORBIT REMAINS SAME AND THE NUMBER OF SHELL INCREASES SO WHEN THE NUMBER OF CELL INCREASESTHE NUCLEAR FORCE OF ATTRACTION TOWARDS THE OUTERMOST ELECTRON INCREASES AND HENCE THE SIZE DECREASES..

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Answer 2

Answer:

atomic radius is decreases in period when move left to right because the effective nucleus charge is increases.