Callahan County, TX Real Estate & Homes for Sale Homes for Sale in Callahan County, TX have a median listing price of $128,995 and a price per square foot of $75. There are 103 active homes for sale in Callahan County, Texas, which spend an average of 73 days on the market. Some of the hottest neighborhoods near Callahan County, TX are Tanglewood East, Chimney Rock Area, Far Southside, River Oaks-Brookhollow. You may also be interested in homes for sale in popular zip codes like 79602, 79601, or in neighboring cities, such as Abilene, Clyde, Baird, Cisco, Coleman.
hydrogen bond. A chemical bond in which a hydrogen atom that is already bonded to an atom in a molecule forms a second bond with another atom, either in the same molecule or in a different one. The second atom is usually of a type that strongly attracts electrons, such as nitrogen or oxygen.
Hydrogen bonding is a strong dipole-dipole attraction that forms between molecules in which hydrogen is bonded to one of the electronegative elements nitrogen, oxygen and fluo â¦ rine. (dipole-dipole bonds are bonds between dipoles-a molecule that has two oppositely charged poles or ends).luorine, oxygen, nitrogen and carbon only. The first three are very electronegative elements bond with hydrogen to form hydrogen bonding. Carbon can also participate in hyd â¦ rogen bonding, especially when the carbon atom is bound to several electronegative atoms, as is the case in fluoroform, CHF3.