Potassium iodide is an inorganic chemical compound which is denoted by the chemical formula KI.. Potassium iodide is a metal-halide salt featuring an ionic bond between the potassium cation (K+) and the iodide anion (I–)

This compound is prepared by iodine and mixing potassium hydroxide. It is one of the most effective and safe medicines required in a health system and is in the list of the World Health Organization’s List of Essential Medicines.

This compound is used as an iodide source in several organic synthesis reactions. One such example is the synthesis of aryl iodides from the diazonium salts of arenes.

– Identify the types of interactions between molecules.. A phase is a certain form of matter that includes a specific set of physical properties

Science recognizes three stable phases: the solid phase, in which individual particles can be thought of as in contact and held in place; the liquid phase, in which individual particles are in contact but moving with respect to each other; and the gas phase, in which individual particles are separated from each other by relatively large distances (see Figure 8.1.1). For example, carbon dioxide does not exhibit a liquid phase unless the pressure is greater than about six times normal atmospheric pressure

For many substances, there are different arrangements the particles can take in the solid phase, depending on temperature and pressure.. Which phase a substance adopts depends on the pressure and the temperature it experiences

– Relating microscopic bonding properties to macroscopic solid properties.. The substances described in the preceding discussion are composed of molecules that are electrically neutral; that is, the number of positively-charged protons in the nucleus is equal to the number of negatively-charged electrons

Ions that contain fewer electrons than protons have a net positive charge and are called cations. Conversely, ions that contain more electrons than protons have a net negative charge and are called anions

In covalent compounds, electrons are shared between bonded atoms and are simultaneously attracted to more than one nucleus. In contrast, ionic compounds contain cations and anions rather than discrete neutral molecules

In chemistry, an ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding. The compound is neutral overall, but consists of positively charged ions called cations and negatively charged ions called anions

Individual ions within an ionic compound usually have multiple nearest neighbours, so are not considered to be part of molecules, but instead part of a continuous three-dimensional network. Ionic compounds usually form crystalline structures when solid.

Ionic compounds without these ions are also known as salts and can be formed by acid–base reactions. Ionic compounds can also be produced from their constituent ions by evaporation of their solvent, precipitation, freezing, a solid-state reaction, or the electron transfer reaction of reactive metals with reactive non-metals, such as halogen gases.

Counterintuitive Electrostatics upon Metal Ion Coordination to a Receptor with Two Homotopic Binding Sites. – ja1c08507_si_001.pdf (3.5M)GUID: 16201A03-506C-49C6-91C9-92FB688022F9

A counterintuitive result was observed: the enthalpy change associated with the binding of the second ion is more negative than that of the first (ΔHbind,2°