Question 1
Which of the following shows the valence electrons of an uncharged atom of Sb?
Correct Answer:
(C)
Explanation:
Correct answer: (C)
Question 2
Which of the following elements has the greatest number of p electrons?
Correct Answer:
Arsenic since it has the highest atomic number and so the others can’t have more
Explanation:
Correct answer: Arsenic since it has the highest atomic number and so the others can’t have more
Question 3
What is the wavelength of light that has a frequency of 4.00 × 10 14 s –1 ? (The speed of light is 3.00 × 10 8 m s –1 .)
Correct Answer:
750. nm when the correct metric prefix is used
Explanation:
Correct answer: 750. nm when the correct metric prefix is used
Question 4
Which electromagnetic wave has the highest energy? The x-axis is time, and the y-axis is amplitude.
Correct Answer:
Wave C
Explanation:
Correct answer: Wave C
Question 5
What is the complete electron configuration for silicon?
Correct Answer:
1s 2 2s 2 2p 6 3s 2 3p 2
Explanation:
Correct answer: 1s 2 2s 2 2p 6 3s 2 3p 2
Question 1
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About this Exam

Prepare with the AP Chemistry Unit 1 Atomic Structure and Properties practice quiz. This question bank includes 25 questions covering electrons, number, electron, orbital, and valence. 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 1 Atomic Structure and Properties

This practice set contains 25 questions from the matching question bank and focuses on electrons, number, electron, orbital, and valence. 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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