The Isotope of Osmium with the Symbol ${ }_{75}^{190} \mathrm{~Os}$ Has How Many Protons?
A)75
B)190
C)115
D)None of the Has

The isotope of osmium with the symbol ${ }_{75}^{190} \mathrm{~Os}$ has how many protons?

A) 75
B) 190
C) 115
D) None of the above.