Albert66 Albert66

12-06-2015
Biology

contestada

An atom has an atomic number 17 and atomic mass number 35. How many neutrons are present in its nucleus?

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10-08-2017

The atomic mass number is the number of neutrons and protons, and the atomic number is just the number of protons. Therefore, subtract the atomic mass number (35) from the atomic number (17) to find the number of neutrons. 35 - 17 = 18.

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