What is the atomic number of carbon?

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Prepare for the Dual Enrollment Physical Science Midterm. Study with flashcards and multiple choice questions, each with hints and explanations. Ace your exam!

Multiple Choice

What is the atomic number of carbon?

Explanation:
Atomic number equals the number of protons in the nucleus and identifies the element. Carbon has 6 protons, so its atomic number is 6. The other numbers correspond to mass numbers of carbon isotopes (12 and 14) or to a different element (8 for oxygen), not to the count of protons. Mass number is protons plus neutrons, while atomic number is just protons. Therefore, the atomic number of carbon is 6.

Atomic number equals the number of protons in the nucleus and identifies the element. Carbon has 6 protons, so its atomic number is 6. The other numbers correspond to mass numbers of carbon isotopes (12 and 14) or to a different element (8 for oxygen), not to the count of protons. Mass number is protons plus neutrons, while atomic number is just protons. Therefore, the atomic number of carbon is 6.

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