AP Chemistry Practice Questions - AP Chemistry (Advanced Placement Chemistry) Exam

As you move from left to right across a period in the periodic table, what generally happens to atomic radius and why?

It increases because more electron shells are added It decreases because electrons are removed from the atom It stays constant because the number of shells is unchanged It decreases because the increasing nuclear charge pulls electrons closer

Correct Answer:

It decreases because the increasing nuclear charge pulls electrons closer

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