If an atom’s mass number is 210 and its atomic number is 85, how many neutrons does it have?

asked Nov 16, 2018 160k views

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Answer:

the answer is 125, i got this right

Kellyb answered Nov 17, 2018

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Mass number is the total number of Protons and Neutrons. Simply subtract 85 from 210. 210-85=125 neutrons

Splatto answered Nov 22, 2018

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