Learning objective
Explain that halogens have seven electrons in their outer shell.
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
The periodic table
Subtopic
Group 7
Study support
Understand this objective
Quick explanation
Explain that halogens have seven electrons in their outer shell
- This point belongs to The periodic table, especially Group 7.
- You need to be able to explain that halogens have seven electrons in their outer shell.
- The key ideas to know are halogens.
- 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 Group 7 to exam-style questions, flashcards, and revision notes for The periodic table.
Quick student answer
How do you explain halogens have seven electrons in their outer shell?
Direct answer
In Chemistry, this page helps you answer questions about halogens have seven electrons in their outer shell within The periodic table. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are halogens and outer shell electrons.
Key terms
- halogens: Elements in Group 7 of the periodic table that have seven electrons in their outer shell.
- outer shell electrons: Electrons located in the highest energy level of an atom, which determine its chemical properties.
Common trap
Misunderstanding Halogen Electron Configuration: Remember that halogens have seven electrons in their outer shell, which is why they are reactive and tend to gain one electron to achieve a full outer shell.
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Revision notestopic notes
Open the full topic revision notes when you are ready to review this objective in context.
Open revision notesRelated learning objectives
- Describe how elements are arranged in order of atomic number in the modern periodic table.
The periodic table
- Explain that columns in the periodic table are called groups.
The periodic table
- Explain that elements in the same group have the same number of outer-shell electrons.
The periodic table
- Explain how outer-shell electrons give elements in the same group similar chemical properties.
The periodic table
- Explain how the position of an element in the periodic table relates to electron arrangement and atomic number.
The periodic table