Question 1
Which two atoms form ions with the same 1s 2 2s 2 2p 6 electron configuration?
Correct Answer:
Na and F
Explanation:
Correct answer: Na and F
Question 2
Which of the following pairs of compounds is expected to have the compound with largest solubility listed first?
Correct Answer:
KBr and Na 2 S
Explanation:
Correct answer: KBr and Na 2 S
Question 3
Which substance is expected to have the largest distance between its nuclei?
Correct Answer:
NaI
Explanation:
Correct answer: NaI
Question 4
Which of the following ions are isoelectronic to (have the same electron configuration as) neon?
Correct Answer:
F −
Explanation:
Correct answer: F −
Question 5
When ammonium carbonate, (NH 4 ) 2 CO 3 , is dissolved in water, the ions formed are
Correct Answer:
(C)
Explanation:
Correct answer: (C)
Question 1
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About this Exam

Prepare with the AP Chemistry Unit 4 Chemical Reactions practice quiz. This question bank includes 20 questions covering ions, reaction, configuration, ionic, and formula. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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AP Chemistry Unit 4 Chemical Reactions

This practice set contains 20 questions from the matching question bank and focuses on ions, reaction, configuration, ionic, and formula. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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