Question detail
What is the atomic number of an element?
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 number of neutrons in the nucleus
- B. The total number of protons and neutrons in the nucleus
- C. The number of protons in the nucleus
- D. The number of electrons in an atom
Answer
The number of protons in the nucleus
Explanation
The atomic number is defined as the number of protons in the nucleus of an atom, which determines the element's identity.
Common mistake
Confusing Protons and Neutrons
Students often confuse protons and neutrons, thinking they have the same charge or role in the nucleus.
Remember that protons are positively charged and determine the atomic number, while neutrons have no charge and contribute to the mass number.
Related flashcards
Flashcard 1 of 5
Press Space to flip, arrows to move
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.
0 of 4 attempted