THINGS I GOT WRONG ON ATOMIC ORBITAL QUIZ/TESTS

Question 1

WHEN EXPLAINING HOW THE EMISSION SPECTRA FOR EX IS PRODUCED WHEN LOOKING AT A CERTAIN ATOM YOU MUST SPECIFY WHAT N LEVEL IT FALLS BACK TO EX)

Answer 1

in hydrogen, and excited electron falls back to n=2

Question 2

When explaining why the fast moving helium nuclei being shot at a thin piece of gold passed straight through its important to mention that

Answer 2

MOST OF THE ATOM IS EMPTY SPACE<—- i forgot

and due to most helium passing stratight through, it shows that the nucleus was very small. It also conlcuded that there was either 1 or a few more charaged particles in the atom