Answer:
Nitrogen, Hydrogen, Chromium
Explanation:
N= Nitrogen
H= Hydrogen (it is not helium because helium is "He")
Cr= Chromium
2NaClO3 = 2NaCl + 3O2
Hopes this helps <33
<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>