Covalent bonding includes many kinds of interactions, including Ï-bonding, Ï-bonding, metal-to-metal bonding, agostic interactions, bent bonds, and three-center two-electron bonds. The term covalent bond dates from 1939. double bond between two given atoms consists of one sigma and one pi bond, and a triple bond is one sigma and two pi bonds. Covalent bonds are also affected by the electronegativity of the connected atoms which determines the chemical polarity of the bond.
A G-string or thong is a narrow piece of cloth or leather, or plastic that passes between the buttocks. It is attached to a band around the hips. It can be worn as a swimwear or underwear by both men and women. The difference between a G-string and a thong is that a g-string has less material between the legs.
Let G be a connected graph. A spanning tree in G is a subgraph of G that includes all the vertices of G and is also a tree. The edges of the trees are called branches.heorem The following are equivalent in a graph G with n vertices. 1  G is a tree. 2  There is a unique path between every pair of vertices in G. 3  G is connected, and every edge in G is a bridge. 4  G is connected, and it has (n - 1) edges. 5  G is acyclic, and it has (n - 1) edges. 6  G is acyclic, and whenever any two arbitrary nonadjacent vertices in G are ...