MCQ
Carbon $-\ 12$ atom has :
- ✓$6$ electrons, $6$ protons, and $6$ neutrons.
- B$6$ electrons, $12$ protons, and $6$ neutrons.
- C$12$ electrons, $6$ protons, and $6$ neutrons.
- D$18$ electrons, $6$ protons, and $6$ neutrons.
✓
Answer
Correct option: A.
$6$ electrons, $6$ protons, and $6$ neutrons.
The mass number of carbon $−12$ is $12$ and the atomic number of carbon is $6.$
Therefore, the number of protons is $6$ and electrons are $6$ as the number of protons and electrons are the same in the neutral atom.
The number of neutrons is equal to the difference of a mass number and atomic number, i.e., $12 - 6 = 6$.
So carbon $-12$ atom has 6 electrons, $6$ protons, $6$ neutrons.
Therefore, the number of protons is $6$ and electrons are $6$ as the number of protons and electrons are the same in the neutral atom.
The number of neutrons is equal to the difference of a mass number and atomic number, i.e., $12 - 6 = 6$.
So carbon $-12$ atom has 6 electrons, $6$ protons, $6$ neutrons.
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