Main-group element Main-group element In chemistry and atomic physics, the main group is the group of elements whose lightest members are represented by helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, and fluorine as arranged in the periodic table of the elements. The main group includes the elements (except hydrogen, which is sometimes not included) in groups 1 and 2 (s-block), and groups 13 to 18 (p-block). The s-block elements are primarily characterised by one main oxidation state, and the p-block elements, when they have multiple oxidation states, often have common oxidation states separated by two units. Main-group elements (with some of the
Solid Foundation but it was delayed by several hours. Before the mixtape's release, a promotional vlog directed by Keemotion was released. Jake Rohn for "BET" wrote, "For fans who enjoy the hard-hitting beats that have established the South in the mainstream, "Solid Foundation" is exactly what it's [sic] name suggests, but as a group, Quality Control Music still has a ways to go if they're looking to keep building." Solid Foundation Solid Foundation is the debut compilation mixtape by the record label Quality Control Music. It was released on February 3, 2014. It features artists from the label including Migos, Rich The