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What is the periodic trend for atomic size from top to bottom in a group ? From left to right in a period ?

User Eldhose
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1 Answer

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19 votes

Answer: (i)from top to bottom atomic size increases

(II) from left to right the atomic size decreases

Step-by-step explanation:

(i) more shells are being opened as we go down hence size will increase

(II) number of shells is the same , but as we move from left to right charge density is increasing hence the outer electrons feels greater attraction from nucleus hence size decreases

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User NexAddo
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