Dual coding theory has been applied to many cognitive phenomena including: mnemonics, problem-solving, concept learning and language. Dual coding theory accounts for the significance of spatial abilities in theories of intelligence (e.g., Guilford).
Properties. 1  Atomic Symbol: Cr. 2  Atomic Number: 24. 3  Atomic Mass: 51.996g/mol1.  Element Category: Transition 1  Metal. Density: 7.19g/cm3 at 20Â° C. Melting Point: 3465Â°F 1  (1907Â°C) Boiling Point: 4840Â°F (2671Â° C) Mohâs Hardness: 5.5.
Caesium or cesium is a chemical element with symbol Cs and atomic number 55. It is a soft, silvery-gold alkali metal with a melting point of 28 Â°C (82 Â°F), which makes it one of only five elemental metals that are liquid at or near room temperature.Caesium is an alkali metal and has physical and chemical properties similar to those of rubidium and potassium.The metal is extremely reactive and pyrophoric, reacting with water even at â116 Â°C (â177 Â°F). It is the least electronegative element.aesium is an alkali metal and has physical and chemical properties similar to those of rubidium and potassium. The metal is extremely reactive and pyrophoric, reacting with water even at â116 Â°C (â177 Â°F). It is the least electronegative element.