During the synthesis of a Grignard reagent in diethyl ether solvent, what is the identity of the bubbles that show up on the surface of the magnesium?
-Gaseous magnesium byproducts
-Gaseous O2
-Gaseous H2
-Gaseous diethyl ether
-Gaseous magnesium byproducts
-Gaseous O2
-Gaseous H2
-Gaseous diethyl ether