Like many other members of the B-vitamin family, Niacin is well-known for its role in energy metabolism (breaking down substances in the body to yield energy). Actually, niacin plays a part in the energy metabolism of all cells in the body. Another benefit of water-soluble vitamin is its versatility.
Adenosine triphosphate (ATP) , the energy currency or coin of the cell pictured in Figfures 1 and 2, transfers energy from chemical bonds to endergonic (energy absorbing) reactions within the cell.nergy is stored in the covalent bonds between phosphates, with the greatest amount of energy (approximately 7 kcal/mole) in the bond between the second and third phosphate groups. This covalent bond is known as a pyrophosphate bond.
Because the strength of their intermolecular forces varies. Halogens are located in group 17 of the periodic table and, with the possible exception of astatine, #As#, exist as diatomic molecules: #F_2#, #Cl_2#, #Br_2#, and #I_2#. These diatomic molecules are formed when two halogen atoms come together to form a covalent bond.