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HomeCXC CSEC Integrated ScienceAtomic Structure: Protons, Neutrons, Electrons and Electronic Configuration
CXC · CSEC · Integrated Science

Atomic Structure: Protons, Neutrons, Electrons and Electronic Configuration
Practice Questions

20 CXC CSEC Integrated Science questions on Atomic Structure: Protons, Neutrons, Electrons and Electronic Configuration, each with instant feedback and a full examiner-style mark scheme.

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✨ Revision guide includes key terms, worked examples and exam technique for Atomic Structure: Protons, Neutrons, Electrons and Electronic Configuration.

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Question 1 · 1 mark · Difficulty 1/3

A student in a Trinidad laboratory is studying the structure of a carbon atom. Which sub-atomic particle is found in the nucleus and has no electrical charge?

  1. Electron
  2. Neutron
  3. Proton
  4. Ion
Show answer & explanation
✓ Answer: BNeutron
Award 1 mark for identifying the neutron as the uncharged particle in the nucleus. A is incorrect — electrons are negatively charged and orbit the nucleus. C is incorrect — protons are positively charged. D is incorrect — an ion is an atom that has gained or lost electrons, not a sub-atomic particle.
Question 2 · 1 mark · Difficulty 1/3

Which electronic configuration correctly represents an atom of oxygen (atomic number 8)?

  1. 2, 8
  2. 2, 6
  3. 8, 2
  4. 2, 4, 2
Show answer & explanation
✓ Answer: B2, 6
Award 1 mark for correct configuration showing 2 electrons in the first shell and 6 in the second shell. A is incorrect — this totals 10 electrons, not 8. C is incorrect — electrons fill the innermost shell first. D is incorrect — this arrangement does not follow the filling rules for electron shells.
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CXC CSEC Integrated Science: Atomic Structure: Protons, Neutrons, Electrons and Electronic Configuration FAQ

How many CXC CSEC Integrated Science questions on Atomic Structure: Protons, Neutrons, Electrons and Electronic Configuration are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Atomic Structure: Protons, Neutrons, Electrons and Electronic Configuration for CXC CSEC Integrated Science, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CXC paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CXC CSEC students preparing for Integrated Science?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Atomic Structure: Protons, Neutrons, Electrons and Electronic Configuration practice with other Integrated Science topics or even switch to a totally different CXC subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Atomic Structure: Protons, Neutrons, Electrons and Electronic Configuration questions aligned to the official CXC CSEC Integrated Science syllabus?
Every question is written against the published CXC CSEC Integrated Science specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CXC paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CXC.
How is Atomic Structure: Protons, Neutrons, Electrons and Electronic Configuration typically tested on CXC CSEC Integrated Science papers?
Atomic Structure: Protons, Neutrons, Electrons and Electronic Configuration appears across multiple question types on real CXC CSEC Integrated Science papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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