Azirconium atom loses two electrons in forming an ion. what is the name of the ion?

Draw the structure for 5-isopropyl-2-methyl-3-nonene

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?