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

Which atomic model was proposed as a result of j. j. thomson’s work?

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.

Using a caesar cypher with an offset of three characters (a -> d, b -> e, z -> c), what would be the correct cypher text for the plain text "attack at dawn"?