The $$\alpha {\text{ - }}D{\text{ - }}$$  glucose and $$\beta {\text{ - }}D{\text{ - }}$$  glucose differ from each other due to difference in carbon atom with respect to its

Solution :
The isomer having the hydroxyl group $$\left( { - OH} \right)$$  on the right is called $$\alpha {\text{ - }}D{\text{ - }}$$  glucose and one having the hydroxyl group $$\left( { - OH} \right)$$  on the left is called $$\beta {\text{ - }}D{\text{ - }}$$  glucose. Such pairs of optical isomers which differ in the configuration only around $${C_1}$$  atom are called amomers. Thus $$\alpha {\text{ - }}D{\text{ - }}$$  glucose and $$\beta {\text{ - }}D{\text{ - }}$$  glucose are anomers.