Find the number of neutrons in an atom represented by 45₂₁X.

amusanopeyemi234

3 years ago

the answer is 24, because the atomic mass is equal to the number of proton plus the number of neutron.....!!!
and from the question,the number of proton is given,and the atomic mass is also given.
.•. 45= 21- x
x = 45-21
x= 24 🤲