8/15/26, 12:05 PM AP Chem Midterm Exam Latest Updates, EXAM - 2026 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answ…
AP Chem Midterm Exam Latest Updates, EXAM -
2026 (Questions + Answers) Study Guide, Practice
Questions, Solutions, Answers,
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Terms in this set (91)
Which of the following is expected to a. Be
have the largest THIRD ionization
energy?
a. Be
b. B
c. C
d. N
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,8/15/26, 12:05 PM AP Chem Midterm Exam Latest Updates, EXAM - 2026 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answ…
In general, atomic radii decrease from d. The effective nuclear charge increases
left to right across a period. The main
reason 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
How many unpaired electrons are in a. 0, diamagnetic
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
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,8/15/26, 12:05 PM AP Chem Midterm Exam Latest Updates, EXAM - 2026 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answ…
The complete photoelectron spectrum b. Peak X because "1s" electrons have the strongest
of an element is given. Which attractions to the nucleus
labeled peak corresponds to the "1s"
electrons and why?
a. Peak X, because "1s" electrons are
the easiest to remove from
the atom
b. Peak X because "1s" electrons have
the strongest attractions to
the nucleus
c. Peak Y because electrons in the "1s"
sublevel are the farthest
from the nucleus
d. Peak Y because there are fewer
electrons in an s sublevel than in
a p sublevel
Calcium reacts with element X to form a. CaX
an ionic compound. If the ground-
state electron configuration of X is 1s2-
2s2-2p4, what is the simplest formula
for this compound?
a. CaX
b. CaX2
c. Ca4X2
d. Ca2X2
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, 8/15/26, 12:05 PM AP Chem Midterm Exam Latest Updates, EXAM - 2026 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answ…
An anion has a charge of 2- (X2-). a. The neutral atom gained two electrons.
Which of the following correctly
describes the 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.
What is the name and formula of the b. H2CO3; carbonic acid
compound shown in the diagram to
the right?
a. H2CO3; carbonous acid
b. H2CO3; carbonic acid
c. H2CO3; dihydrogen carbonate
d. H3CO2; triydrogen carbon dioxide
Which of the following isoelectric d. Na
species has the smallest radius?
a. O2-
b. F-
c. Ne
d. Na
Which of the following nuclei has 3 b. Chlorine-37
more neutrons than protons?
a. Boron-11
b. Chlorine-37
c. Magnesium-24
d. Gallium-70
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AP Chem Midterm Exam Latest Updates, EXAM -
2026 (Questions + Answers) Study Guide, Practice
Questions, Solutions, Answers,
Add to calendar
Play your way to mastery with fun games
Match Blocks Charms NEW
Terms in this set (91)
Which of the following is expected to a. Be
have the largest THIRD ionization
energy?
a. Be
b. B
c. C
d. N
https://quizlet.com/1199636181/ap-chem-midterm-exam-latest-updates-exam-2026-questions-answers-study-guide-practice-questions-solutions-ans… 1/33
,8/15/26, 12:05 PM AP Chem Midterm Exam Latest Updates, EXAM - 2026 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answ…
In general, atomic radii decrease from d. The effective nuclear charge increases
left to right across a period. The main
reason 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
How many unpaired electrons are in a. 0, diamagnetic
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
https://quizlet.com/1199636181/ap-chem-midterm-exam-latest-updates-exam-2026-questions-answers-study-guide-practice-questions-solutions-ans… 2/33
,8/15/26, 12:05 PM AP Chem Midterm Exam Latest Updates, EXAM - 2026 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answ…
The complete photoelectron spectrum b. Peak X because "1s" electrons have the strongest
of an element is given. Which attractions to the nucleus
labeled peak corresponds to the "1s"
electrons and why?
a. Peak X, because "1s" electrons are
the easiest to remove from
the atom
b. Peak X because "1s" electrons have
the strongest attractions to
the nucleus
c. Peak Y because electrons in the "1s"
sublevel are the farthest
from the nucleus
d. Peak Y because there are fewer
electrons in an s sublevel than in
a p sublevel
Calcium reacts with element X to form a. CaX
an ionic compound. If the ground-
state electron configuration of X is 1s2-
2s2-2p4, what is the simplest formula
for this compound?
a. CaX
b. CaX2
c. Ca4X2
d. Ca2X2
https://quizlet.com/1199636181/ap-chem-midterm-exam-latest-updates-exam-2026-questions-answers-study-guide-practice-questions-solutions-ans… 3/33
, 8/15/26, 12:05 PM AP Chem Midterm Exam Latest Updates, EXAM - 2026 (Questions + Answers) Study Guide, Practice Questions, Solutions, Answ…
An anion has a charge of 2- (X2-). a. The neutral atom gained two electrons.
Which of the following correctly
describes the 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.
What is the name and formula of the b. H2CO3; carbonic acid
compound shown in the diagram to
the right?
a. H2CO3; carbonous acid
b. H2CO3; carbonic acid
c. H2CO3; dihydrogen carbonate
d. H3CO2; triydrogen carbon dioxide
Which of the following isoelectric d. Na
species has the smallest radius?
a. O2-
b. F-
c. Ne
d. Na
Which of the following nuclei has 3 b. Chlorine-37
more neutrons than protons?
a. Boron-11
b. Chlorine-37
c. Magnesium-24
d. Gallium-70
https://quizlet.com/1199636181/ap-chem-midterm-exam-latest-updates-exam-2026-questions-answers-study-guide-practice-questions-solutions-ans… 4/33
