This figure represents part of the emission spectrum for a
one-electron ion in the gas phase. All the lines result from
electronic transitions from excited states to the n=3 state. (a)
What electronic transition corresponds to line A?
n= to n=3
(b) What electronic transition corresponds to line B?
n= to n=3.
(c) If the wavelength of line B is 142.5 nm, calculate the wavelength of line A.
(d) Based on this data, what must the identity of this ion be? Enter the atomic symbol and the charge (if any), for example "H", "He+1", "B+4", etc.
plz, explain step by step and don't forget the sig fig..