one of the tin isotopes has 50 protons and 63 neutrons. another isotope of tin might have a)50 protons and 0 neutrons

b)50 protons and 62 neutrons
c)49 protons and 63 neutrons
d)63 protons and 63 neutrons
e)63 protons and 50 neutrons

2 answers

The number of protons defines the element as tin, so any tin isotope will have 50 protons plus a variable number of neutrons.
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