All the following statements describing unit cells are correct, except........ ○ In a face - centered cubic lattice, an atom laying in a face of a unit cell is shared equally by 2 unit cells. O In a body centered cubic cell, 4 atoms are contained in a unit cell. O In any cubic lattice, an atom lying at the corner of a unit cell is shared equally by 8 unit cells. In a face centered cubic lattice, 4 atoms are contained in the unit cell. O In a cubic lattice, an atom on the edge of a unit cell is shared equally by 4 unit cells.

1. Large biomolecules can be crystallized into lattices with the same unit cell features as more simple ionic solids. In these cases, a lattice point is occupied by one macromolecule instead of one atom or ion. The crystalline form of a certain protein has density 1.287 g/cm³ and face-centered cubic unit cells with length 12.3 nm. What is the molar mass of the protein?

Krypton crystallizes in the body centered unit cell with an edge length of 559 pm. What is the density of Krypton?

How many atoms of barium are in the unit cell? what type of cubic cell is this (face-centered, simple cubic, or body-centered)? What is the radius of the barium atom? the textbook provides the values