When you go into a room and touch a piece of metal in that room, it feels colder than a piece of plastic. Explain. Consider two metals: Metal A and Metal B (Metal A = 0.130 J/g degrees C; Metal B = 0.449 J/g degrees C) If a student has the same mass of both ...
It is the second-most electropositive element, behind only caesium, and is the second rarest naturally occurring element (after astatine). The isotopes of francium decay quickly into astatine, radium, and radon. The electronic structure of a francium atom is [Rn] 7s1, and so the element is...
can be traced back to just a single object: a metal kilogram made of platinum and iridium that resides under lock and key in an underground vault in Paris. It’s called the International Prototype Kilogram, or IPK, and since its creation in 1889 ...
Name the only metal that exists as a liquid at room temperature.What metal is found in liquid state at room temperature?The only metal on earth with a liquid state at room temperature is [{Blank}].What are the metals that are liquid at room temperature? A) Caesium B) Gallium C) ...
What is the most stable monatomic ion formed from caesium? What is the charge for the ion of cesium? (a) +1 (b) +2 (c) -1 (d) -2. Using the electron configurations of the following elements, identify the most probable ion that is formed from each of them. \ (a) Rb (b) S...
14941/52. Class 39(1) [Also in Group XXIII] An alkali-metal, especially caesium, vapour lamp has an envelope of hard lime glass coated internally with a glass which resists attack by caesium vapour at temperatures of from 400 to 600C. The resistant glass, which is of the ternary system...
14941/52. Class 39(1) [Also in Group XXIII] An alkali-metal, especially caesium, vapour lamp has an envelope of hard lime glass coated internally with a glass which resists attack by caesium vapour at temperatures of from 400 to 600C. The resistant glass, which is of the ternary system...
A certain metal hydroxide, M(OH)_2 contains 32.8 % oxygen by mass. What is the identity of the metal M? What are the formulas for the following ionic compounds: sodium sulphide, caesium bromide, and magnesium nitride? What is the chemical formula for beryllium...
What is the only metal that is not a solid at room temperature? What are the metals that are liquid at room temperature? A) Caesium B) Gallium C) Rubidium D) Mercury What state of matter does conduction and convection take place in? What metal is found in liquid state at room temper...
According to one aspect of the invention M is an alkali metal ion such as lithium, sodium, potassium, or caesium, particularly lithium, sodium or potassium, although metallic elements in the second row of the Periodic Table such as barium, magnesium or calcium may be useable, as may transitio...