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kobusy [5.1K]
3 years ago
5

How does atomic size change within groups and across periods?

Chemistry
1 answer:
REY [17]3 years ago
8 0
Atomic size decreases along a period because of the nuclear charge increasing, this means that the electrons are more attracted to the nucleus, which decreases the size.
Atomic size increases down a group because the number of electron shells is greater each time, meaning that the electrons are less attracted to the nucleus.
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