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CBSE Class 10 Answered

How does the atomic size vary across a period ? Give reason.
Asked by nbharati796 | 03 Feb, 2020, 06:42: PM
answered-by-expert Expert Answer
Atomic size decreases actross a period from left to right. 
Reason: Along a period number of shells remian the same but nuclear charge increases hence attractive force of the nucleus on valence electrons increases. Thus atomic size decreases.
Answered by Ravi | 04 Feb, 2020, 11:06: AM

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