Hi, I have to determine the spring constant for a diatomic molecule. I have the frequency in cm^-1 which is 1395. I know the relation between the angular frequency and spring constant so I use the following relation: omega = 2*pi*c*v = sqrt(k/mu) so I isolate for k = mu*(2*pi*c*v)^2 mu = 8*1.66*10^-27 v = 1395 cm^-1 which gives me k = 9.18*10^-6 kg/s^2 This strikes me as a rather strange result? For a diatomic molecule I would expect something like at least 400-800 N/m for the bond force? What is wrong ? Thanks in advance.