Abstract: It is necessary to note, that the heat of vaporization, all thermodynamic functions ∆с,fGo, ∆с,fHo, So, ∆cSocond and heat capacity (Cp) of organometallic compounds of I-IV groups of Mendeleev′s Periodic Table can be well characterized with the number of valence electrons N of them. It is difficult to do some conclusions relatively stoichiometric coefficients i and f in modified by us Kharasch equation vap,c,f,sΨo = i ± f *N as they concern to organometallic compounds of the different groups. Such conclusion can be made on settlement data of I and II groups only in our opinion. Nevertheless, 43 equations of this type have been created for the processes of vaporization, combustion, formation, entropic transformations and heat capacity. Probably, that such data will help with forecasting of thermochemical functions and parameters of yet not investigated organometallic compounds.Abstract: It is necessary to note, that the heat of vaporization, all thermodynamic functions ∆с,fGo, ∆с,fHo, So, ∆cSocond and heat capacity (Cp) of organometallic compounds of I-IV groups of Mendeleev′s Periodic Table can be well characterized with the number of valence electrons N of them. It is difficult to do some conclusions relatively stoichiometric co...Show More