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Mathematics 19 Online
OpenStudy (briellshaw):

An atom of carbon has 6 protons, 6 neutrons and 6 electrons. What is its atomic number? A. 5 B. 6 C. 12 D. 18

OpenStudy (briellshaw):

Isnt the answer C. 12

OpenStudy (anonymous):

Atomic number= Proton number= 6.

OpenStudy (johnweldon1993):

Not quite, the atomic number is based off the number of protons

OpenStudy (briellshaw):

OH so the answer is B.6

OpenStudy (anonymous):

Yes.

OpenStudy (briellshaw):

Thanx

OpenStudy (johnweldon1993):

Correct, I believe you were thinking about the mass number before...where Mass number = # of protons + # of neutrons

OpenStudy (briellshaw):

Thanks

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