For the alkali metals (Li to Cs) the unit cell lengths of these body-centered cubic crystals are 3.50, 4.28, 5.33, 5.62, and 6.05 A, respectively. Using the Pauli ionic radii , show that the fraction of space outside the core region decreases in going from Li to Cs. What might be the reason for this decrease? What are the plasma frequencies? Pauli Ionic Radii for Li= .60 & Cs= 1.69

Aball is thrown straight up into the air with a speed of 21 m/s. if the ball has a mass of 0.1 kg, how high does the ball go? acceleration due to gravity is g = 9.8 m/s^2. a. 22.5 m b. 20.0 m c. 25.0 m d. 17.5 m

Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. in essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution. suppose a current of 480.ma is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 46.0 seconds. calculate the mass of pure silver deposited on a metal object made into the cathode of the cell. round your answer to 3 significant digits. also, be sure your answer contains a unit symbol. ×10μ

Explain the consequences of this addiction to the brain tissue