2 years ago

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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