In an S_(N)1 reaction on chiral centres, there is :
Answer»
100 % retention 100 % inversion 100 % RACEMIZATION inversion more than retention leading to partial racemization.
SOLUTION :`S_(N)1` reaction gives racemic MIXTURE with slight predominance of that isomer which corresponds to inversion because `S_(N)1` also depends UPON the degree of shielding of the front side of the reacting carbon.