How many elements have ka lines between `241` pm and `180` pm?
Take Rydberg’s constant `R = 1.09 × 107 m^(–1)`

Absorption spectrum is obtained for a sample of gas having atomic hydrogen in ground state. Which lines of the spectrum will be in the range 94 nm to 122 nm . Take Rydberg’s constant R = 1.1 × 107 m^(–1)

Total number of elements which are present in a row on the periodic table between those elements, whose wavelength of K_(alpha) lines are equal to 250 and 179 pm are ( Rydberg constant = 1.097xx10^7m^-1 )

Total number of elements which are present in a row on the periodic table between those elements, whose wavelength of K_(alpha) lines are equal to 250 and 179 pm are ( Rydberg constant = 1.097xx10^7m^-1 )

Frequency of a photon emitted due to transition of electron of a certain element from L to K shell is found to be 4.2 xx 10^(18) Hz Using Moseley 's law, find the atomic number of the element , given that the Rydberg's constant R = 1.1 xx 10^(7) m^(-1)

frequency of a photon emitted due to transition of electron of a cerrain element from L to K shell is found to be 4.2 xx 10^(18) Hz using moseley 's law, find the atomic number of the element , given that the Rydberg's constant R = 1.1 xx 10^(7) m^(-1)

The wave length of first member of Balmer series of a hydrogen atom is nearly (The value of Rydberg constant R = 1.08 xx 10^(7)m^(-1) )