Question

A certain metal crystallizes in a body centered cubic unit cell with an edge length of 310 pm. What is the length in Angstroms of the unit cell diagonal that passes through the atom?

Answer 1

Solution :-

Radius = 310 pm

so the diagonal length = 4 * r

                                  = 4*310 pm

                                  = 1240 pm

now lets convert pm to angstrom

1240 pm * 0.010 A / 1 pm = 12.4 A

So the length of the diagonal is 12.4 Angstrom