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Question 1
Which electronic configuration represents a d-block transition metal atom in its ground state with anomalous stability due to a fully filled d-subshell?
Correct Answer:
[Ar] 3d¹⁰ 4s¹
Question 2
Why is the first ionization energy of Nitrogen (Z = 7) higher than that of Oxygen (Z = 8), despite Oxygen having a higher nuclear charge?
Correct Answer:
Oxygen experiences inter-electron repulsion between paired 2p electrons in the same orbital.
Question 3
An element X has the following successive ionization energies in kJ mol⁻¹: 738, 1450, 7730, 10500, 13600. In which group of the Periodic Table is element X located?
Correct Answer:
Group 2
Question 4
What is the ground state electronic configuration of the Fe³⁺ ion (Z = 26)?
Correct Answer:
[Ar] 3d⁵
Question 5
A beam containing ¹H⁺, ²H⁺, ³H⁺, ³He²⁺, and ⁴He²⁺ ions is passed through an electric field perpendicular to its motion. Which ion undergoes the LARGEST angle of deflection?
Correct Answer:
¹H⁺
Question 1
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Prepare with the sg-a-level-h1-chemistry Practice Questions - sg-a-level-h1-chemistry Exam practice quiz. This question bank includes 100 questions covering enthalpy, volume, pressure, solution, and reaction. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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sg-a-level-h1-chemistry Practice Questions - sg-a-level-h1-chemistry Exam

This practice set contains 100 questions from the matching question bank and focuses on enthalpy, volume, pressure, solution, and reaction. 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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