d and f BLOCK ELEMENTS

Why is the +2 oxidation state common among transition elements?

• Because it is the only stable state
• Because the ns electrons are relatively easy to remove
• Because the d-electrons are always removed first
• Because it is required by the periodic table

What is another common oxidation state for Iron (Fe)?

• +1
• +2
• +3
• -3

What is a common oxidation state for Iron (Fe)?

• +1
• +2
• +4
• -2

What is the highest oxidation state commonly exhibited by Manganese (Mn)?

• +2
• +4
• +6
• +7

Why do transition elements often exhibit multiple oxidation states?

• Because they are highly reactive
• Due to the similar energies of (n-1)d and ns orbitals, allowing different numbers of electrons to be lost
• Because they have low ionization energies
• Because they are metals