The mass number (A) of carbon with six protons and six neutrons is ______.
Understand the Problem
The question is asking for the mass number of carbon, which is calculated by adding the number of protons and neutrons in the nucleus. In this case, carbon has six protons and six neutrons, so the mass number will be the sum of these two values.
Answer
12
The mass number (A) of carbon with six protons and six neutrons is 12.
Answer for screen readers
The mass number (A) of carbon with six protons and six neutrons is 12.
More Information
The mass number is calculated by summing the number of protons and neutrons in the atom's nucleus. For carbon with 6 protons and 6 neutrons, it totals 12, known as Carbon-12.
Tips
A common mistake is confusing the mass number with the atomic number, which is only the number of protons.
Sources
- Carbon-12 - remm.hhs.gov
- Sub-Atomic Particles - Chemistry LibreTexts - chem.libretexts.org
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