Question

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 the atom.

Answer 1

atomic number of a particle is defined by number of protons or number of electrons
and for atomic mass u can write
atomic mass=no. of protons +no. of neutrons
atomic number = 7,
then no.of protons = 7 and also
no. of electrons = 7
neutrons = 15 - 7 = 8
so--
protons=7
electrons=7
neutrons=8

Answer 2

did u understand what i wrote? @kitteh♥

Answer 3

yeah thanks i was putting it in my notebook

Answer 4

okey :)