For radicals, 1.Is the charge on radicals its valency or oxidation number? and why? 2.How are the charges on radicals gotten?. For example, so4^2- has a charge of -2, how was the -2 gotten? Pls give me a detailed explanation If understood, I would mark the Brainliest answer

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