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Castilla y León PAU Chemistry Practice Questions - Castilla y León PAU Chemistry (Química 2o Bachillerato) Exam

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About this Exam

Prepare with the Castilla y León PAU Chemistry Practice Questions - Castilla y León PAU Chemistry (Química 2o Bachillerato) Exam practice quiz. This question bank includes 100 questions covering reaction, chemical, atom, energy, and bond. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

Sample Questions

Question 1
Which specific atomic orbital is characterized by the set of quantum numbers n = 3, l = 1, and ml = 0?
3s orbital
3p orbital
3d orbital
4p orbital
Question 2
What is the ground-state electron configuration of a neutral iron atom (Fe, atomic number Z = 26)?
[Ar] 3d⁶ 4s²
[Ar] 3d⁸
[Ar] 3d⁵ 4s³
[Ar] 4s² 4p⁶
Question 3
How does the first ionization energy generally change across Period 3 of the periodic table from Sodium (Na) to Argon (Ar)?
It decreases continuously because atomic mass increases.
It increases generally due to increasing effective nuclear charge.
It remains constant because electrons are added to the same principal shell.
It fluctuates unpredictably with no observable trend.
Question 4
Which of the following statements correctly compares the atomic/ionic radii of Na vs Na⁺ and Cl vs Cl⁻?
Na⁺ is larger than Na, and Cl⁻ is smaller than Cl.
Na⁺ is smaller than Na, and Cl⁻ is larger than Cl.
Both Na⁺ and Cl⁻ are larger than their neutral parent atoms.
Both Na⁺ and Cl⁻ are smaller than their neutral parent atoms.
Question 5
According to Hund's rule of maximum multiplicity, how do electrons populate degenerate 2p orbitals in a ground-state carbon atom (Z = 6)?
They pair up in a single 2p orbital with antiparallel spins.
They occupy two separate 2p orbitals with parallel spins.
They occupy two separate 2p orbitals with antiparallel spins.
They enter the 3s orbital before filling the 2p subshell.

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Castilla y León PAU Chemistry Practice Questions - Castilla y León PAU Chemistry (Química 2o Bachillerato) Exam

This practice set contains 100 questions from the matching question bank and focuses on reaction, chemical, atom, energy, and bond. 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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Frequently Asked Questions

This quiz contains a total of 100 practice questions carefully selected to test your knowledge on this subject.
Yes, you will have exactly 0 minutes to complete the exam. A countdown timer will be visible once you start.
Yes, you can retake this practice test as many times as you need. The questions and options may be randomized on subsequent attempts to ensure comprehensive learning.

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