When the principal quantum number of the hydrogen electron is ...

[bobbie]

When the principal quantum number of the
  hydrogen electron is infinite,
  a) the electron has an orbit of 0.053 nm radius.
  b) the electron has a binding energy of +13.60 eV.
  c) the electron has a binding energy of -13.60 eV.
  d) the electron is no longer bound to the hydrogen
   nucleus at all.

Question 2

The orbits of the electrons in the hydrogen atom
  are
  a)evenly spaced.
  b)characterized by a principal quantum number.
  c)always smaller than that of the ground state.
  d)all at the same energy level within a given atom.

[Bison]

Answer to Question 1

d

Answer to Question 2

b

[bobbie]

Excellent

[softEldritch]

Thanks for the timely response, appreciate it