d and f BLOCK ELEMENTS

In contrast to p-block elements, how do heavier d-block members generally behave regarding oxidation states?

• They favor lower oxidation states
• They favor higher oxidation states
• They show no preference
• They only show +2 oxidation state

What factor limits Scandium primarily to the +3 oxidation state?

• Its large atomic size
• Its position at the start of the series
• The number of valence electrons it possesses
• Its low electronegativity

Which element in the 3d series shows oxidation states ranging from +2 to +7?

• Chromium
• Vanadium
• Iron
• Manganese

What is the oxidation state of Nickel in NiO?

• 0
• +1
• +2
• +3

Why do transition elements typically show oxidation states differing by unity (1)?

• Because they are metals
• Due to the similar energy levels of (n-1)d and ns orbitals
• Because they have high electronegativity
• Because they form covalent bonds