Monoxide PbO are amphoteric. Monoxide A monoxide is any oxide containing just one atom of oxygen in the molecule. For example, Potassium oxide (KO), has only one atom of oxygen, and is thus a monoxide. Water (HO) is also a monoxide; see dihydrogen monoxide hoax. A well known monoxide is carbon monoxide (CO); see carbon monoxide poisoning. Most of the members of the Periodic Table form oxides when oxidized. There are two main types of oxides: monoxides and dioxides. Monoxides (generally MO) such as silicon monoxide (SiO) only exist at high temperatures. Among monoxides, CO is neutral, GeO is distinctly acidic,
U Should've Known Better song entered the "Billboard" Hot 100 chart, where it debuted at number 67 in the week of June 6, 2004, the second-highest debut of the week. "U Should've Known Better" remained twenty weeks on the chart, reaching its peak position of number 19 in its ninth week. It marked the second single from "After the Storm" to reach the top twenty on the Hot 100chart and, as the album's final single, would remain its second highest-charting offering behind leading single "So Gone." Although never released on a CD single or CD maxi single format, "U Should've Known Better" was also