Indole is an aromatic heterocyclic organic compound with formula C8H7N. It has a bicyclic structure, consisting of a six-membered benzene ring fused to a five-membered nitrogen-containing pyrrole ring. Indole is widely distributed in the natural environment and can be produced by a variety of bacteria. As an intercellular signal molecule, indole regulates various aspects of bacterial physiology, including spore formation, plasmid stability, resistance to drugs, biofilm formation, and virulence.
2. A polyatomic ion, also known as a molecular ion, is a charged species (ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered as acting as a single unit in the context of acid and base chemistry or in the formation of salts.. Posted by Rohit (student) on 14/3/11.EST ANSWER Certified by MeritNation Expert. A polyatomic ion, also known as a molecular ion, is a charged species (ion) composed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit in the context of acid and base chemistry or in the formation of salts.
Monodentate ligands have only one atom capable of binding to a central metal atom or ion. H 2 0 and NH 3 are examples of neutral monodentate ligands. When H 2 0 is a ligand, oxygen is the donor atom binding to the metal.When NH 3 is a ligand, nitrogen is the donor atom binding to the metal. Examples of monodentate ligands which begin with charges are halide ions, such as: F - , Cl - , Br - , I - , and cyano, CN - .onodentate ligands have only one atom capable of binding to a central metal atom or ion. H 2 0 and NH 3 are examples of neutral monodentate ligands. When H 2 0 is a ligand, oxygen is the donor atom binding to the metal.