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.
The phosphate ion is a polyatomic ion with the empirical formula PO 4 3â and a molar mass of 94.97 g/mol. It consists of one central phosphorus atom surrounded by four oxygen atoms in a tetrahedral arrangement.queous phosphate exists in four forms. In strongly basic conditions, the phosphate ion (PO 4 3â) predominates, whereas in weakly basic conditions, the hydrogen phosphate ion (HPO 4 2â) is prevalent. In weakly acid conditions, the dihydrogen phosphate ion (H 2 PO 4 â) is most common.