The number of neutrons in dipositive zinc ion with mass number $70$ is:

Q. The total number of neutrons in dipositive zinc ions with mass number $70$ is:

Q. A dipositive ion has an electronic arrangement $2,8,8$. Find out the number of electrons, protons, and neutrons in that element if its mass number is 40.

Q. Shrikant reads the following number of pages of a book daily. Find the mean.
$34,43,29,51,36,41,38,35,34,36,34,38,40,36,35,$

Q.

The electronic configuration of a dipositive metal $M^{2+}$ is 2, 8, 14 and its atomic weight is 56 a.m.u. The number of neutrons in its nuclei would be