

MCQOPTIONS
Saved Bookmarks
1. |
If the energy of the electron in the 1st orbit of hydrogen is -13.6 eV, then how much is the energy (in eV) of an electron in the 3rd orbit? |
A. | -1.51 |
B. | -4.53 |
C. | -40.8 |
D. | -122.4 |
Answer» B. -4.53 | |