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

Question

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] · Answer 1 · 2022-09-18T16:13:09+03:00

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