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).
However, you notice an anomaly; HF should have a boiling point below that of HCl, then how come it has the highest boiling point? After all, Fluorine has lesser electrons than Chlorine and hence should have lesser London dispersion forces between them. This is true but there is another reason behind that: Hydrogen Bonding.