Select a correct set of quantum numbers (n, l, m, m ) for the highest energy electron in the ground state of tin, Sn a. 5, 2, -1, 1/2
b.5, 1, 2, +1/2
c.5, 1, 1, 1
d.5, 1, 0, +1/2
e.5, 2, 0, -1/2

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?  

The total number of nucleons

Ithink about 50 % of an original isotope's number of atoms remain