Chemistry - f-block Question with Solution | TestHub

(A) Correct : f-block metals have low ionization potential (I.P.), so they lose electrons easily and show high electropositive character.

(B) Incorrect : Lanthanides form carbides (e.g., LaC₂, CeC₂), so the statement is false.

(C) Incorrect : Misch metal is an alloy of lanthanide metals with about 5% iron (Fe), not chromium (Cr).

(D) Correct : Europium and Ytterbium have unusually large atomic volumes due to their stable electronic configurations (Eu: 4f⁷, Yb: 4f¹⁴).

Correct Answer: (A) and (D)