AIPMT 2005 | d and f Block Elements Question 63 | Chemistry

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AIPMT 2005

MCQ (Single Correct Answer)

-1

More number of oxidation states are exhibited by the actinoids than by the lanthanoids. The main reason for this is

more active nature of the actinoids

more energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals

lesser energy difference between 5f and 6d orbitals than that between 4f and 5d orbitals

greater metallic character of the lanthanoids than that of the corresponding actinoids.

AIPMT 2004

MCQ (Single Correct Answer)

-1

lanthanoids are

14 elements in the sixth period (atomic no. 90 to 103) that are filling 4f sublevel

14 elements in the seventh period (atomic number = 90 to 103) that are filling 5f sublevel

14 elements in the sixth period (atomic number = 58 to 71) that are filling the 4f sublevel

14 elements in the seventh period (atomic number = 50 to 71) that are filling 4f sublevel.

AIPMT 2004

MCQ (Single Correct Answer)

-1

Among the following series of transition metal ions, the one where all metal ions have 3d² electronic configuration is
[At. Nos. Ti = 22, V = 23, Cr = 24, Mn = 25]

Ti³⁺, V²⁺, Cr³⁺, Mn⁴⁺

Ti⁺, V⁴⁺, Cr⁶⁺, Mn⁷⁺

Ti⁴⁺, V³⁺, Cr²⁺, Mn³⁺

Ti²⁺, V³⁺, Cr⁴⁺, Mn⁵⁺

AIPMT 2003

MCQ (Single Correct Answer)

-1

The correct order of ionic radii of Y³⁺, La³⁺, Eu³⁺ and Lu³⁺ is
(Atomic nos. Y = 39, La = 57, Eu = 63, Lu = 71)

Y³⁺ < La³⁺ < Eu³⁺ < Lu³⁺

Y³⁺ < Lu³⁺ < Eu³⁺ < La³⁺

Lu³⁺ < Eu³⁺ < La³⁺ < Y³⁺

La³⁺ < Eu³⁺ < Lu³⁺ < Y³⁺

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