Question

Determine the number of p+, e and nº in
Radon-230 and Radon-235.

Answer 1

These numbers are the isotope of the element radon.
Isotope means same number of proton but different atomic mass # for the same element.
So radon-230 has
P+ ->88
E ->88
N -> 230-88 = 142

Radon 235
P -> 88
E -> 88
N -> 235-88 = 147