Answer
Αn α-β-1,2-glycosidic bond.
Work Step by Step
The chemical bond joining α-glucose and β-fructose in sucrose is called α-β-1,2-glycosidic linkage because the hydroxyl group of the C-1 carbon at which condensation occurs is in the α position. Similarly, the fructose hydroxyl group which contributes to the glycoside bond is in the β position.
