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sladkih [1.3K]
3 years ago
13

if a neutral atom has a mass of 15 amu and an atomic number of 7, determine the number of protons, neutrons, and electrons in th

e atom.
Chemistry
1 answer:
guajiro [1.7K]3 years ago
6 0
Atomic number = amount of protons, so 7 protons.

Because it is a neutral atom, that means that the number of protons has to be the same as the number of electrons. So, there are 7 electrons.

The mass number of an atom, 15, is the total number of protons + neutrons, so 15 - 7 = 8. There are 8 neutrons
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