Learning objective
Use particle properties to compare atoms, ions and isotopes.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
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Flashcards
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Questions
Topic
Atomic structure
Subtopic
Fundamental particles
Study support
Understand this objective
Quick explanation
Use particle properties to compare atoms, ions and isotopes
- This point belongs to Atomic structure, especially Fundamental particles.
- You need to be able to use particle properties to compare atoms, ions and isotopes.
- The key ideas to know are properties, particle, and ions.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Fundamental particles to exam-style questions, flashcards, and revision notes for Atomic structure.
Quick student answer
Which of the following statements correctly compares the number of electrons in a neutral atom of carbon, a C²⁺ ion, and a carbon isotope with 8 neutrons?
Direct answer
The neutral carbon atom has 6 electrons. A C²⁺ ion has lost two electrons, so it has 4 electrons. An isotope of carbon (e.g. ¹³C) has the same number of protons and electrons as the neutral atom, so it also has 6 electrons.
Key terms
- Isotope: Atoms of the same element with identical proton numbers but differing neutron numbers.
- Ion: An atom or molecule that carries a net electric charge due to loss or gain of electrons.
Common trap
Confusing Neutron Count with Electron Count: Isotopes have the same number of protons and electrons; only neutrons differ.
Related questions
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Flashcard prompts
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Revision tools
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Flashcards0 linked cards
Practice Questions0 linked questions
Revision notestopic notes
Open the full topic revision notes when you are ready to review this objective in context.
Open revision notesRelated learning objectives
- Explain that scientific understanding of atomic structure has developed over time.
Fundamental particles
- State the relative charge and relative mass of protons, neutrons and electrons.
Fundamental particles
- Describe an atom as a nucleus containing protons and neutrons surrounded by electrons.
Fundamental particles
- Determine the numbers of protons, neutrons and electrons in atoms and ions from mass number, atomic number and charge.
Mass number, isotopes and mass spectrometry
- Explain the existence of isotopes using different neutron numbers.
Mass number, isotopes and mass spectrometry