The Energy of an Electron in the Hydrogen Atom Is

Multiple Choice

The energy of an electron in the hydrogen atom is determined by

A) the principal quantum number ( n) only.
B) the angular momentum quantum number ( l) only.
C) the principal and angular momentum quantum numbers ( n & l ) .
D) the principal and magnetic quantum numbers ( n & m_l) _.
E) the principal, angular momentum and magnetic quantum numbers.