In hydrogen atom spectrum

In hydrogen atomic spectrum, a series limit found at 12186.3 cm^(-1) . Then it belongs to.

In hydrogen atomic spectrum , a series limit is found at 12186.3 cm^(-1) . Then it belong to :

Which of the following set of radiations can not be seen in hydrogen atomic spectrum ? {:((i) gamma -"radiation",(ii)UV),((iii) "X-rays", (iv) "Infrared"):}

The wavelength (in cm) of second line in the Lyman series of hydrogen atomic spectrum is (Rydberg constant =" R cm"^(-1) )