Question

Which set has the correct number of protons, neutrons, and electrons for the Zn-70 ion?

Answer 1

Answer:

No. of neutrons in Zn

2+

-

Atomic weight =70

Atomic number =30

Number of neutrons = At. wt. − At. no. =70−30=40

Hence, the total number of neutrons in dipositive zinc ions with the mass number 70 is 40.

So, the correct option is B