posted by Sunny .
The hydrogen emission spectrum has four series (or sets) of lines named Balmer, Brackett, Paschen, and Lyman. Indicate the energy (infrared, ultraviolet, or visible), the nf value for each series, and all possible ni values up to 7. ( Separate the values with commas from lowest to highest. The display will look odd with preceding commas, but that is normal.
You want a report written. Someone here will be glad to critique what you write.