3 Questions
Which of the following is a subatomic particle with a negative charge?
Electron
What is the total number of protons present in the nucleus of a carbon-12 atom?
6
Which of the following statements is true about isotopes?
They have different mass numbers and same atomic numbers
Study Notes
Subatomic Particles
- An electron is a subatomic particle with a negative charge.
Atomic Nucleus
- A carbon-12 atom has 6 protons in its nucleus.
Isotopes
- Isotopes are atoms of the same element with the same number of protons (atomic number) but a different number of neutrons (mass number).
Test your knowledge of subatomic particles, atomic structure, and isotopes with these multiple-choice questions based on Class 9 CBSE NCERT Chemistry Chapter 1.
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