Diatomic molecules are molecules made of two atoms chemically bonded together. The atoms can be of the same element (homonuclear molecules), or of different elements (heteronuclear molecules). Familiar examples of diatomic molecules of elements are the five gaseous state diatomic elements: Cl 2, F 2 H 2, N 2 ,and O 2.onding in Diatomic Molecules. In homonuclear diatomic molecules, the bonding is covalent. Each atom in the molecule has equal electronegativity; electrons are shared equally between the two atoms. In heteronuclear diatomic molecules, the atoms differ in electronegativity; these molecules have polar covalent bonds.
In a hiatal hernia, the stomach pushes up through that opening and into your chest. A small hiatal hernia usually doesn't cause problems. You may never know you have one unless your doctor discovers it when checking for another condition. But a large hiatal hernia can allow food and acid to back up into your esophagus, leading to heartburn. Self-care measures or medications can usually relieve these symptoms. A very large hiatal hernia might require surgery.
Incisional/ventral hernias are defects that appear at the site of a prior surgical incision. An incisional hernia can develop in the abdominal wall around a previous incision. It usually arises in the abdominal wall where a previous surgical incision was made. This results in a bulge or a tear in the area where the abdominal muscles have weakened. Incisional hernias can increase in size with time. A hernia occurs when part of an organ (usually the bowel or intestine) protrudes through a weak point or tear in the thin muscular wall that holds the abdominal organs in place. Hernias can develop around the navel, in the groin, or any place where you may have had a surgical incision.