Calculate the wave length in amsrong unit of the first spectra line in the bama series for Li2 take R= 109766rcm
i tried using this formular 1/lander = Z^2R(1/n1^2-1/n2^2) then Z is 3, n1 = 2 n2= 3
I wonder if your typing is just VERY bad or if you don't know better. amstrong must be Angstrom, spectra line should be spectral line, bama series must be Balmer series and I have no idea what R = 109766rcm is.
lander must be lambda and Li2 doesn't exist.
Assuming you did all of that what is the problem? Substitute and go. lambda comes out in meters if R is 1.09737316E7 m^-1