Final answer:
Rhenium oxide crystallizes in a cubic unit cell with 1 rhenium atom and 2 oxygen atoms. The formula of rhenium oxide is ReO2. The oxidation state of rhenium in rhenium oxide is +4.
Step-by-step explanation:
A. In the cubic unit cell, there are 1 rhenium atom and 2 oxygen atoms. The rhenium atom is located at the center of the unit cell, while the oxygen atoms are located at the corners of the unit cell.
B. The formula of rhenium oxide can be determined by considering the ratio of rhenium atoms to oxygen atoms in the unit cell. Since there is 1 rhenium atom and 2 oxygen atoms, the formula of rhenium oxide is ReO2.
C. Rhenium can exhibit various oxidation states in different compounds, but in this case, the oxidation state of rhenium in rhenium oxide is +4.
D. Each oxygen atom in rhenium oxide is surrounded by 4 rhenium atoms, resulting in a tetrahedral geometry around each oxygen atom.
E. Each rhenium atom in rhenium oxide is surrounded by 6 oxygen atoms, resulting in an octahedral geometry around each rhenium atom.