OSAS Science Grade 11 Practice Questions - Oregon Statewide Assessment System - Science, Grade 11 Exam

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Using the periodic table as a model, which trend correctly describes how atomic radius changes from left to right across a period?

Radius increases because atoms gain more neutrons Radius increases because atoms gain more electron shells Radius decreases because increasing nuclear charge pulls electrons closer Radius decreases because electrons are removed from the outer shell

Correct Answer:

Radius decreases because increasing nuclear charge pulls electrons closer

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