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elena-14-01-66 [18.8K]
3 years ago
5

9.For the following questions, use a periodic table and your atomic calculations to find the unknown information about each isot

ope:
You have an neutrally charged isotope with a mass number of 99 and an atomic number of 43. How many protons?

99
43
56
142
Physics
1 answer:
myrzilka [38]3 years ago
3 0
43 because the atomic number tells us how many protons there are in an atom.
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