nervous system definition. The system in the body that controls internal functions of the body and receives, interprets, and responds to stimuli. The nervous system is made up of the brain, the spinal cord, the nerves, and the sense organs, such as the eye and ear.
Caesium fluoride or cesium fluoride is an inorganic compound usually encountered as a hygroscopic white solid. It is used in organic synthesis as a source of the fluoride anion.Caesium has the lowest electronegativity of all non-radioactive elements and fluorine has the highest electronegativity of all elements.aesium fluoride can be prepared by the reaction of caesium hydroxide (CsOH) with hydrofluoric acid (HF). The resulting salt can then be purified by recrystallization.
Properties of cesium. Cesium is a silvery-white alkali metal that is very soft and ductile. It has the second lowest melting point of all metallic elements and is liquid near room temperature.Besides two bright blue lines in its spectrum, it also has red, yellow and green wavelengths.[See Periodic Table of the Elements ].roperties of cesium. Cesium is a silvery-white alkali metal that is very soft and ductile. It has the second lowest melting point of all metallic elements and is liquid near room temperature.