The symptoms of influenza (flu) appear suddenly and often include: 1  Fever of 100.4Â°F (38Â°C) to 104Â°F (40Â°C), which can reach 106Â°F (41Â°C) when symptoms first develop. 2  Body aches and muscle pain (often severe), commonly in the back, arms, or legs. 3  Headache. Pain when you move your eyes.
A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electrostatic force of attraction between opposite charges, either between electrons and nuclei, or as the result of a dipole attraction. double bond between two atoms is formed by the sharing of two pairs of electrons, one in a sigma bond and one in a pi bond, with electron density concentrated on two opposite sides of the internuclear axis.
The process of formation of these compounds, by combination of two or more atoms of the same or different elements to form molecules, is known as Chemical Bonding. The result of this phenomenon is called a Chemical Bond. Throughout Inorganic Chemistry, the term bond may be presumed to be synonymous with force. Hence, a Chemical Bond is defined as the strong force of attraction which can hold a group of two or more atomic species together. The atomic species, here, can be referred to, more or less, the atom itself.