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Questions and Answers
Which of the following is a subatomic particle with a negative charge?
Which of the following is a subatomic particle with a negative charge?
- Proton
- Electron (correct)
- Neutron
- Nucleus
What is the total number of protons present in the nucleus of a carbon-12 atom?
What is the total number of protons present in the nucleus of a carbon-12 atom?
- 0
- 12
- 6 (correct)
- 18
Which of the following statements is true about isotopes?
Which of the following statements is true about isotopes?
- They have same atomic numbers and same mass numbers
- They have different atomic numbers and same mass numbers
- They have different atomic numbers and different mass numbers
- They have different mass numbers and same atomic numbers (correct)
Flashcards
Electron
Electron
A negatively charged subatomic particle that orbits the nucleus of an atom.
Protons in Carbon-12
Protons in Carbon-12
Carbon-12 has 6 protons in its nucleus.
Isotopes
Isotopes
Isotopes have the same number of protons (same atomic number) but different numbers of neutrons (different mass 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).
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