Question 1
Copper is an exception to the expected orbital filling order. What is the ground-state electron configuration of a neutral copper atom (Cu, Z = 29)?
Correct Answer:
[Ar] 3d10 4s1
Question 2
Which statement correctly describes the trend in atomic radius across Period 3 from sodium (Na) to chlorine (Cl)?
Correct Answer:
Atomic radius decreases because nuclear charge increases while shielding remains relatively constant.
Question 3
Which equation represents the process whose enthalpy change is the first ionisation energy of magnesium?
Correct Answer:
Mg(g) -> Mg+(g) + e-
Question 4
What is the ground-state electron configuration of the chromium(III) ion, Cr3+ (Z = 24)?
Correct Answer:
[Ar] 3d3
Question 5
Which statement is the best definition of electronegativity?
Correct Answer:
The relative attraction of a bonded atom for the shared pair of electrons in a covalent bond.
Question 1
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About this Exam

Prepare with the NCEA L3 Chemistry Practice Questions - NCEA Level 3 Chemistry (New Zealand, Year 13) Exam practice quiz. This question bank includes 100 questions covering mol-1, reaction, energy, chloride, and enthalpy. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NCEA L3 Chemistry Practice Questions - NCEA Level 3 Chemistry (New Zealand, Year 13) Exam

This practice set contains 100 questions from the matching question bank and focuses on mol-1, reaction, energy, chloride, and enthalpy. 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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