Descriptive Inorganic Chemistry Textbook 5th Edition - Questions 4.18 amp; 4.20 1) In a body-centered unit cells, the atoms usually touch across the...

Descriptive Inorganic Chemistry Textbook 5th Edition - Questions 4.18 & 4.20

1) In a body-centered unit cells, the atoms usually touch across the diagonal of the face. If the atomic radius is r, calculate the length of each side of the unit cell.

2) The atoms in barium metal are arranged in a body-centered cubic unit cell. Calculate the radius of a barium atom if the density of barium is 3.50 g (cm^-3). Use Question 1 to help with Question 2.