HEART DISEASE is the number one cause of death in the United States, for women as well as men. The various forms of heart disease, which. include coronary artery disease (CAD), high blood pressure, atheroÂ­. sclerosis, heart failure and heart attacks, are responsible for over. 250,000 deaths a year among women. Research-based strategies to promote.
A: A valence electron is a type of electron present in an atom that works to aid in the process of chemical bond formation with other atoms. These electrons a... Full Answer > Filed Under: Atoms & Molecules.
In organic chemistry sigma bonds (Ï) are always the first bond between two atoms, resulting from overlap along the bonding axis (of hybrid orbitals), while pi bonds (Ï) are second and third bonds resulting from the overlap of p orbitals, above and below (or in front and back of) the bonding axis.