in periodic table ( in period and group) how the size of atom changes explain
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Answer:
the size of atom decreases as we move in a period from left to right exception noble gas size is largest in the period.
the size of atom increase when we move down in group except for Al>Ga in group 13.
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Answered by
3
Answer:
- In Period-
On moving from left to right in a period, the atomic size decreases. More and more electrons are added to same shell. The attraction between nucleus and valence electrons increases with increase in the atomic number.
- In Group-
On moving down the group, from top to bottom, the atomic size increases. This is because with increase in the atomic number, extra shells of electrons are added.
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