The length of \(CN\) bond in tabun is \(1.47\,\dot{A}\) so,
\(f_{res}=0.122\cfrac{c}{BL}\)
\(f_{res}=0.122\cfrac{c}{1.47*10^{-10}}=248.80734609523808e15\,Hz\)
Breaking CN Bonds in Tabun sq 2488-073 Hz
which might help with low level tabun exposure in drinks, food or aerosol.
And to remove the residues,
Lymph plaque lymph stasis 596 346 3176 Hz
Listen to both may improve eyesight.