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AP Chemistry Midterm Exam (2024 / 2025) Updated Questions and Verified Answers, 100% Guarantee Pass
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AP Chemistry Midterm Exam (2024 / 2025) Updated Questions and Verified Answers, 100% Guarantee Pass

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  • September 5, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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AP Chem Midterm Exam.pdf file:///C:/Users/HP/Desktop/New%20folder/AP%20Chem%20Midt




AP Chem Midterm Exam Questions & Verified

Answers


1. Which of the following is expected to have the largest THIRD ionizationenergy?

a. Be

b. B

c. C

d. N

Answer a. Be



2. In general, atomic radii decrease from left to right across a period.The mainreason for

this behavior is

a. The number of neutrons in the nucleus increases

b. The number of electrons increases

c. The atomic mass increases

d.The effective nuclear charge increases





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,AP Chem Midterm Exam.pdf file:///C:/Users/HP/Desktop/New%20folder/AP%20Chem%20Midt




Answer d.The effective nuclear charge increas-es



3. How many unpaired electrons are in the atom represented by the electron

configuration 1s2-2s2-2p6-3s2-3p6

and is it

diamagnetic or paramagnetic?

a. 0, diamagnetic

b. 0, paramagnetic

c. 3, diamagnetic

d. 3, paramagnetic

Answer a. 0, diamagnetic



4. The complete photoelectron spectrum of an element is given. Whichlabeled

peak corresponds to the "1s" electrons and why?

a. Peak X, because "1s" electrons are the easiest to remove fromthe atom

b. Peak X because "1s" electrons have the strongest attractions tothe nucleus

c. PeakY because electrons in the "1s" sublevel are the farthestfrom the

nucleus





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d. PeakY because there are fewer electrons in an s sublevel than in

a p sublevel

Answer b. Peak X because "1s" electrons have the strongest attractions to thenucleus



5. Calcium reacts with element X to form an ionic compound. If the

ground-state electron configuration of X is 1s2-2s2-2p4, what is the simplestformula for

this compound?

a. CaX

b. CaX2

c. Ca4X2

d. Ca2X2

Answer a. CaX









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,AP Chem Midterm Exam.pdf file:///C:/Users/HP/Desktop/New%20folder/AP%20Chem%20Midt




6. An anion has a charge of 2- (X2-).Which of the following correctly describesthe process

that resulted in that

charge?

a. The neutral atom gained two electrons.

b. The neutral atom lost two electrons.

c. The neutral atom gained two protons.

d. The neutral atom lost two protons.

Answer a. The neutral atom gained two electrons.



7. What is the name and formula of the compound shown in the diagram to theright?

a. H2CO3; carbonous acid

b. H2CO3; carbonic acid

c. H2CO3; dihydrogen carbonate

d. H3CO2; triydrogen carbon dioxide

Answer b. H2CO3; carbonic acid



8. Which of the following isoelectric species has the smallest radius?







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