In the conversion of alkyne to trans -alkene by birch reduction using alkali metals (such as Na orK) in liquid NH_3 and alcohol (MeOH or EtOH), The mechanism takes place in the formation of intermediate species in the following sequence:

In the conversion of alkyne to trans -alkene by birch reduction using

1.	In the conversion of alkyne to trans -alkene by birch reduction using alkali metals (such as Na orK) in liquid NH_3 and alcohol (MeOH or EtOH), The mechanism takes place in the formation of intermediate species in the following sequence:
Answer» RADICAL ANION`to`VINYLIC radical`to`TRANS-vinylic anion`to`trans-alkene Radical anion`to`trans-vinylic anion`to`vinylic radical`to`trans-alkene Vinylic radical`to`Radical anion Trans`to`vinylic anion`to`trans-alkene Vinylic radical`to`trans-vinylic anion`to`Radical anion`to`trans-alkene SOLUTION :Radical anion ` to ` vinylic radical ` to` Trans-vinylic anion ` to` trans-alkene