the isotope of an atom containing 40 proteins and 51 neutrons suddenly has two neutrons added to it what isotope is created?
A. antimony - 53
B. antimony - 93
C. zirconium - 93
D. zirconium - 53
A. antimony - 53
B. antimony - 93
C. zirconium - 93
D. zirconium - 53