Question 1
Question detail
What does the atomic number of an element indicate?
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 isotopes
Question
- A. The total mass of the atom
- B. The number of electrons in a neutral atom
- C. The type of chemical bonds it can form
- D. The number of neutrons in the nucleus
Answer
The number of electrons in a neutral atom
Explanation
In a neutral atom, the atomic number indicates the number of protons, which is equal to the number of electrons.
Common mistake
Confusing Atomic Number and Mass Number
Students often confuse atomic number with mass number, thinking both refer to the same quantity.
Remind students that atomic number is the number of protons in the nucleus, while mass number is the total number of protons and neutrons.
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