how does the atomic size of elements changes while moving across the period from left to right and while moving down from top to bottom in a group
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Explanation:
On moving left to right in a period, atomic size decreases so the nucleus force increases. Due to this, across a period in the periodic table, ionization energy usually increases. When moving down the group, the number of shells increases. ... Thus, ionization energy decreases on moving top to bottom.
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From left to Right across the period Atomic size decreases because across the period no of electron increase due to this they get more attracted towards nucleas.
While moving down the group atomic size or atomic radius increases because down the group no of shells increase.
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