It Was First Discovered That Atoms Have a Nucleus When

Multiple Choice

It was first discovered that atoms have a nucleus when

A) scientists photographed the nucleus of uranium.
B) Einstein hypothesized the existence of the nucleus in 1915.
C) some alpha particles were deflected by gold nuclei in Rutherford's experiment.
D) experiments showed that electrons must have a charge balance at an atom's center.
E) Rutherford split the nucleus of uranium atoms.