NEETChemistryd and f Block Elements

Compare the oxidation state of actinoids with that of the lanthanoids

Options

ALanthanoids exhibit a wider range of oxidation states compared to actinoids.
BActinoids and lanthanoids exhibit similar ranges of oxidation states.
CBoth actinoids and lanthanoids are primarily monovalent in their oxidation states.
DLanthanoids show only +2,+3,+4 oxidation states due to large energy gap between 4f and 5d subshells but actino

Correct answer

D. Lanthanoids show only +2,+3,+4 oxidation states due to large energy gap between 4f and 5d subshells but actino

Step-by-step solution

Correct Option is : (D) Lanthanoids show only +2,+3,+4 oxidation states due to large energy gap between 4f and 5d subshells but actinoids show a large number of oxidation states due to small energy gap between 5f and 6d subshell.

Practice d and f Block Elements on Quantrex Academy →

More from d and f Block Elements

Although +3 oxidation state is most common in lanthanoids, cerium still shows +4 oxidation state because : 2026 The lanthanide ion having four unpaired electrons is (Given : Atomic numbers of Ce =58 , Nd =60 , Tb =65 and Ho =67 ) 2026 The green paramagnetic species formed by heating KMn O₄ at 513 K is 2026 The calculated 'spin-only' magnetic moment of Ti ²⁺ (3d^2) is : 2026 Match List I with List II : List I (Transition metal/compound/complex) List II (Catalytic Role) A. V ₂ O ₅ I. Preparation of ammonia from N ₂/ H ₂ mixture B. Fe II. Polymerisation 2026 Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R . Assertion A : Generally, 3d transition metals have high melting points. Reas 2026 Given below are two statements : Statement I : Ferromagnetism is considered as an extreme form of paramagnetism. Statement II : The number of unpaired electrons in a Cr ²⁺ ion ( Z 2025 Which of the following set of ions act as oxidising agents? 2024 Full d and f Block Elements list All NEET PYQs