Question

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

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

43
99
56
142

Answer 1

okay this might be the hardest one of all um I think it is 99

Answer 2

According to Articunojaz, the answer is 99.

Go ahead and give him brainliest now :D (a year l8r)