d and f BLOCK ELEMENTS

Why are ferrates(VI) (FeO4)2- not commonly found in acidic or neutral conditions?

• They are insoluble
• They readily oxidise water
• They readily decompose to Fe2O3 and O2
• They disproportionate to Fe3+ and Fe

Based on the text, which of the following is a characteristic property of Mn2O7?

• It is an ionic solid
• It is described as a covalent oxide
• It is stable in aqueous solution
• It contains Mn in the +6 oxidation state

What is the highest known fluoride of Manganese according to the text?

• MnF3
• MnF5
• MnF7
• MnF4

Which of the following statements correctly describes Sc2O3 according to the text?

• It is an example of a mixed oxide
• It represents Scandium in its +2 oxidation state
• It is covalent in nature
• It represents Scandium in its +3 oxidation state, matching its group number

What is the main reason oxygen can stabilise higher oxidation states better than fluorine?

• Higher electronegativity
• Smaller atomic size
• Ability to form multiple bonds
• Greater ionic character