Answers LA-Physical Science A NonmetalsQuestion 1

1

QuizMultiple Choice

Nonmetals

Question 1 • LA-Physical Science A

Which statement best explains why radon and krypton do not bond easily with other elements?

Answer

A

They have many electron shells, so their protons do not attract electrons strongly.

B

They have eight electrons in their valence shells, so they are stable without gaining or losing electrons.

C

Their valence shells are empty, so they do not need to bond with other elements to be more stable.

D

Their valence shells are so close to the protons in the nucleus that bonding cannot happen like in other elements.

Explanation

Radon and krypton are noble gases. Each has a full outer electron shell—eight valence electrons—so it is already stable and has little tendency to gain, lose, or share electrons. Therefore, choice B best explains why they do not bond easily with other elements.

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