d and f BLOCK ELEMENTS

Which of the following best describes the structure of Mn2O7 as mentioned in the text?

• It is a simple ionic lattice
• It contains Mn-O-Mn bridges connecting tetrahedral units
• It is a linear molecule
• It consists of isolated MnO4- ions

What is the relationship between the group number and the highest oxide oxidation state according to the text?

• They always coincide
• They coincide up to Mn
• They are inversely related
• They coincide for all transition metals

Which of the following statements is TRUE regarding the oxides of 3d metals according to Table 4.6?

• Iron only forms one oxide
• Zinc only forms one type of oxide listed, ZnO, under +2
• All metals form oxides in +1 state
• Manganese does not form a +2 oxide

According to the text, what is the highest oxidation state achieved by Manganese in its known oxides?

• +5
• +6
• +7
• +8

Which of the following is listed as a mixed oxide for Cobalt in Table 4.6?

• CoO
• Co2O3
• Co3O4
• CoO2