How many neutrons are there in an atom of (Xe) whose mass number is 133? a. 187
b.54
c. 133
d.79
e. None of the above

It would be (at) + cu (s)

Ithink that the use of creativity in the sciences entails that one produce something out of nothing or from another thing. with this, i think that the he wrote down his results as four parts of the atomic theory is the manifestation of the  creativity of john dalton.