one isotope of chromium (atomic number 24) has an atomic mass of 53 amu. how many neutrons are in this particular isotope of chromium?
I say A
chemistry - DrBob222, Saturday, November 24, 2012 at 8:34pm
#protons + #neutrons = mass #.
I don't agree with A as the answer.
chemistry - DrBob222, Saturday, November 24, 2012 at 9:16pm
Look at the equation I gave you. # protons is the atomic number. That's 24. Mass # in the problem is 53.
# neutrons = 53-24 = ?
chemistry - drew, Saturday, November 24, 2012 at 9:20pm
got it now B