â George Mandler has described the origins of cognitive psychology in, Ulric Neisser is credited with formally having coined the term cognitive(2002). psychology (in terms of the current understanding of cognitive psychology) in his book Cognitive Psychology, published in 1967.
The melting point of fluorine is -219 Â°C (-363 Â°F). The boiling point of fluorine is -188 Â°C (-307 Â°F).
Allotropes are forms of an element with different physical and chemical properties. This white tin has a melting point of 232Â°C (450Â°F), a boiling point of 2,260Â°C (4,100Â°F), and a density of 7.31 grams per cubic centimeter.