Castilla-La Mancha PAU Chemistry (Química - UCLM 2026) Practice Questions - Castilla-La Mancha PAU Chemistry (Química - UCLM 2026) Exam - Castilla-La Mancha PAU Chemistry (Química - UCLM 2026) Practice Questions - Castilla-La Mancha PAU Chemistry (Química

Question 1

Which set of quantum numbers (n, l, ml, ms) is valid for the last electron of a ground-state nitrogen atom (Z = 7)?

(2, 1, +1, +1/2) (2, 2, 0, +1/2) (2, 0, +1, -1/2) (1, 1, 0, +1/2)

Correct Answer:

(2, 1, +1, +1/2)

Question 2

What is the ground-state electron configuration of the Fe³⁺ ion (Z = 26)?

[Ar] 4s² 3d³ [Ar] 3d⁵ [Ar] 4s¹ 3d⁴ [Ar] 3d⁶

Correct Answer:

[Ar] 3d⁵

Question 3

Calculate the energy of a photon of electromagnetic radiation with a wavelength λ = 500 nm in a vacuum. (Given: h = 6.626 · 10⁻³⁴ J·s, c = 3 · 10⁸ m/s).

1.33 · 10⁻²⁷ J 9.94 · 10⁻³¹ J 3.98 · 10⁻¹⁹ J 5.96 · 10⁻¹⁷ J

Correct Answer:

3.98 · 10⁻¹⁹ J

Question 4

Which of the following chemical species has the largest ionic radius?

Cl⁻ K⁺ Ca²⁺ S²⁻

Correct Answer:

S²⁻

Question 5

Calculate the de Broglie wavelength associated with an electron (m = 9.11 · 10⁻³¹ kg) moving at a velocity v = 2.00 · 10⁶ m/s. (Given: h = 6.626 · 10⁻³⁴ J·s).

0.364 nm 1.21 nm 3.64 nm 0.036 nm

Correct Answer:

0.364 nm

Question 1

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Prepare with the Castilla-La Mancha PAU Chemistry (Química - UCLM 2026) Practice Questions - Castilla-La Mancha PAU Chemistry (Química - UCLM 2026) Exam practice quiz. This question bank includes 100 questions covering calculate, reaction, equilibrium, rate, and constant. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Castilla-La Mancha PAU Chemistry (Química - UCLM 2026) Practice Questions - Castilla-La Mancha PAU Chemistry (Química - UCLM 2026) Exam

This practice set contains 100 questions from the matching question bank and focuses on calculate, reaction, equilibrium, rate, and constant. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

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Castilla-La Mancha PAU Chemistry (Química - UCLM 2026) Practice Questions - Castilla-La Mancha PAU Chemistry (Química - UCLM 2026) Exam

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