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statuscvo [17]
2 years ago
14

A. How many protons, electrons, and neutrons make up an atom

Chemistry
1 answer:
mestny [16]2 years ago
5 0

Answer:

45 neutrons

Explanation:

Bromine has 35 protons and a mass number of 80. a) How many neutrons does the atom of bromine have? The mass number = protons + neutrons. Bromine has a mass number of 80 and 35 protons so 80-35 = 45 neutrons.

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