CAIE IGCSE Physics 5.1.1.2 How atoms may form positive ions by
Practise deciding how atoms become positive or negative ions by tracking electron loss or gain in short statement tables.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- distinguish positive ions formed by electron loss from negative ions formed by gain
5.1.1.2—How atoms may form positive ions by question 1
[Maximum number: 1]
A magnesium ion has a double positive charge and a chloride ion has a single negative charge.
Which statement is correct?
A
A chlorine atom gains an electron to form the chloride ion.
B
A chlorine atom loses a proton to form the chloride ion.
C
A magnesium atom loses an electron to form the magnesium ion.
D
A magnesium atom gains two electrons to form the magnesium ion.
A
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