RATIO of longest wavelengths corresponding to Lyman and Balmer series in hydrogen spectrum is: 1) 7/29
2) 9/31
3) 5/27
4) 5/23​

Which statement describes the formation of our sun? a disk formed of long trails of stars coiled into a spiral. it formed an elliptical flattened disk. heat and gases contracted within a nebula. gravity pushed stars away from a center core.