Article Sections. Urinary tract infections are the most common bacterial infections in women. Most urinary tract infections are acute uncomplicated cystitis. Identifiers of acute uncomplicated cystitis are frequency and dysuria in an immunocompetent woman of childbearing age who has no comorbidities or urologic abnormalities.
In this lesson you learned about two types of bonds: nonpolar covalent and polar covalent. Nonpolar covalent bonds are a type of chemical bond where two atoms share a pair of electrons with each other. Polar covalent bonding is a type of chemical bond where a pair of electrons is unequally shared between two atoms.
The only exception is the bond between two atoms of the same element. Covalent bonds are said to be non-polar when the difference in electronegativity of two atoms ranges from 0 to 0.4. Polar refers to electronegativity difference between 0.4 and 1.67. For both non-polar and polar covalent bonds, higher electronegativity in an element results in stronger attraction of the electron pair.