They may have no bond polarity and does not contain
in the molecule so known as saturated hydrocarbons.Preparation(i) From Grignard reagent
RMgX alkyl magnesium halide (other examples of RMgX type molecules are RLi and R2
This reaction is known as Zere wittinoff’s method
for estimation of active hydrogen in the molecule. Active hydrogen is the one which is attached to a highly electronegative element. eg., N,O,S etc. Hydrogen attached to alkyl groups like —CH3
are never active due to less electronegativity of ‘C’ atom.