Question 1
Which set of quantum numbers (n, l, m_l, m_s) is permissible for an electron in a 3p atomic orbital?
Correct Answer:
n = 3, l = 1, m_l = -1, m_s = +1/2
Question 2
What is the ground-state electron configuration of the Fe²⁺ ion (atomic number Z = 26)?
Correct Answer:
[Ar] 3d⁶
Question 3
Which of the following elements has the highest first ionization energy?
Correct Answer:
Fluorine (F)
Question 4
Why does nitrogen (Z = 7) have a higher first ionization energy than oxygen (Z = 8), despite oxygen being to the right of nitrogen in Period 2?
Correct Answer:
Nitrogen has a half-filled 2p subshell (2p³), which confers extra exchange stability.
Question 5
Arrange the following species in order of INCREASING ionic/atomic radius: K⁺, Ar, Cl⁻, S²⁻.
Correct Answer:
K⁺ < Ar < Cl⁻ < S²⁻
Question 1
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Prepare with the Andalusia PAU Chemistry Practice Questions - Andalusia PAU Chemistry (Química 2o Bachillerato) Exam practice quiz. This question bank includes 100 questions covering reaction, constant, rate, calculate, and equilibrium. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Andalusia PAU Chemistry Practice Questions - Andalusia PAU Chemistry (Química 2o Bachillerato) Exam

This practice set contains 100 questions from the matching question bank and focuses on reaction, constant, rate, calculate, and equilibrium. 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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