Answer:
Neutrons
Explanation:
Isotopes are atoms with same protons and different neutron number. For eg: Hydrogen has 0 neutrons. But a stable isotope of hydrogen called Deuterium has 1 neutron but both still have 1 proton which makes them isotopes.
<span> </span><span><span>Colored ions indicate the presence of a transition metal.
Transition metals display colors because of their incompletely filled d
orbitals. As the transition metal absorbs a particular wavelength of
light to raise the electron orbital, it causes the light that passes
through the solution to emit a color.</span></span>
A proton is an atom that has lost a valence electron and therefore has more positive protons than Negative electrons so it is positively charged