The four sets of lines in the hydrogen emission spectrum are known as balmer, brackett, paschen, and lyman. for each series, assign the energy (infrared, ultraviolet, or visible), the nr value, and all possible n, values up to 7 series balmer brackett paschen lyman energy nf ni visible) infrared ultraviolet 1 2 3 6 7
Balmer series - Observed in the visible region
Brackett series - Observed in the infrared region
Paschen series - Observed in the infrared region
Lyman series - Observe in the Ultraviolet region.
explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.
thats a little if u want the answer just look it up on google thats what i do haha : )