Isotopes
Easyphysics
Two isotopes of an element differ in:
Select the correct option:
Solution
Incorrect! Answer:
Number of neutrons
- Definition: Isotopes are variants of a particular chemical element which differ in neutron number (N).
- Nucleus Composition:
- Protons (Z): Same.
- Neutrons (N): Different.
- Impact on Mass: Because A=Z+N, isotopes have different mass numbers (A).
- Chemical vs Physical: Since they share the same number of electrons and protons, they have nearly identical chemical properties but different physical properties (like stability/radioactivity).
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About This Question
- Subject
- physics
- Chapter
- atoms and nuclei
- Topic
- isotopes
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Number of neutrons
- Definition: Isotopes are variants of a particular chemical element which differ in neutron number (N).
- Nucleus Composition:
- Protons (Z): Same.
- Neutrons (N): Different.
- Impact on Mass: Because A=Z+N, isotopes have different mass numbers (A).
- Chemical vs Physical: Since they share the same number of electrons and protons, they have nearly identical chemical properties but different physical properties (like stability/radioactivity).
This easy difficulty physics question is from the chapter atoms and nuclei, covering the topic of isotopes. It appeared in the 2025 exam.
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