Asked by drew

one isotope of chromium (atomic number 24) has an atomic mass of 53 amu. how many neutrons are in this particular isotope of chromium?

A. 24
B. 29
C. 53
D. 77

I say A
Answered by DrBob222
#protons + #neutrons = mass #.
I don't agree with A as the answer.
Answered by DrBob222
Look at the equation I gave you. # protons is the atomic number. That's 24. Mass # in the problem is 53.
# neutrons = 53-24 = ?
Answered by drew
got it now B
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