Question detail
What does isotope notation represent in a nuclear equation?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Atoms and nuclear radiation
Question
- A. The type of radiation emitted
- B. The mass number and atomic number of an atom
- C. The energy released during decay
- D. The half-life of the radioactive substance
Answer
The mass number and atomic number of an atom
Explanation
Isotope notation shows both the mass number (total number of protons and neutrons) and the atomic number (number of protons) of an atom, which is essential for understanding nuclear equations.
Common mistake
Common Mistake in Isotope Notation
Students often confuse the mass number and atomic number when writing isotope notation, leading to incorrect representations of isotopes.
To fix this, remember that the mass number is the total number of protons and neutrons, while the atomic number is just the number of protons. Always place the mass number at the top left and the atomic number at the bottom left of the element symbol.
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