Question 1
Chromium metal crystallizes as a body-centered cubic lattice. If the atomic radius of Cr is 1.25 angstroms, what is the density of Cr metal in g/cm3?
◦
5.52◦
7.8◦
14.4◦
2.76◦
3.59Question 2
Consider the representations below to answer the
following question.
(I)

(II)

(III)

Which of the following statements are incorrect concerning drawing III?
Reference: Ref 8-1
◦
Electrostatic interactions exist between the molecules.◦
The molecules find the best compromise between attraction and repulsion.◦
These molecules exhibit ionic bonding.◦
OCS exhibits this type of interaction.◦
Two of these statements are incorrect.