For ionising an excited hydrogen atom, the energy required (in eV) will be
A. a little less than 13.6
B. 13.6
C. more than 13.6 eV
D. 3.4 or less
Answer:D
For ionising an excited hydrogen atom, the energy required (in eV) will be
A. a little less than 13.6 B. 13.6 C. more than 13.6 eV D. 3.4 or less