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6 votes
What is the mass number of a carbon atom with 6 protons and 6 neutrons? 6 12 24 18

User Ankitr
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2 Answers

23 votes
23 votes

Answer:

12

Step-by-step explanation:

A neutral atom of Carbon-12 contains six protons, six neutrons, and six electrons; therefore, it has a mass number of 12

User Akiba
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2.8k points
12 votes
12 votes

Answer:

12

Step-by-step explanation:

Mass number = #protons + #neutrons = 6 + 6 = 12

User Imesh
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