Question

8. Assertion : An atom of Oxygen is larger in size than an atom of Boron.
Reason: The atomic radius decreases from left to right in a period of periodic table.
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Answer 1

Answer:

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Answer 2

Answer:Atomic radius decreases in moving left to right along a period.

Explanation:This due to an increase in nuclear charge which tends to pull the electrons closer to the nucleus and reduces the size of the atom