Saved Bookmarks
| 1. |
Calculate the first Bohr radius of a singly ionized helium atom. Compare with the first Bohr radius ao of the hydrogen atom. Write down the generalized Balmer formula for this ion. Find the first lines of the series corresponding to the Lyman and the Balmer series. |
|
Answer» `1/lamda=Z^(2)R(1/m^(2)-1/n^(2))` For helium (Z = 2) we obtain `1/lamda=4R(1/m^(2)-1/n^(2))` The principal line of the Lyman series is the RESULT of the transition from the second to the first level (m = 1, n = 2) and of the Balmer series `(H_(alpha))` the result of the transition from the third to the second level (m = 2, n = 3). |
|