1
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1

Which of the following set of ions act as oxidising agents?

A
$$\mathrm{Ce}^{4+}$$ and $$\mathrm{Tb}^{4+}$$
B
$$\mathrm{La}^{3+}$$ and $$\mathrm{Lu}^{3+}$$
C
$$\mathrm{Eu}^{2+}$$ and $$\mathrm{Yb}^{2+}$$
D
$$\mathrm{Eu}^{2+}$$ and $$\mathrm{Tb}^{4+}$$
2
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1

The UV-visible absorption bands in the spectra of lanthanoid ions are 'X', probably because of the excitation of electrons involving 'Y'. The 'X' and 'Y', respectively, are : Narrow and d and f orbitals

A
Broad and f orbitals
B
Narrow and f orbitals
C
Broad and d and f orbitals
D
Narrow and d and f orbitals
3
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1

Match List I with List II:

List - I
(Block/group in periodic table)
List - II
(Element)
(A) Lanthanoid (I) Ce
(B) d-block element (II) As
(C) p-block element (III) Cs
(D) s-block element (IV) Mn

Choose the correct answer from the options given below:

A
A-I, B-II, C-IV, D-III
B
A-I, B-IV, C-III, D-II
C
A-I, B-IV, C-II, D-III
D
A-IV, B-I, C-II, D-III
4
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1

Identify the incorrect statement.

A
$$\mathrm{PEt}_3$$ and $$\mathrm{AsPh}_3$$ as ligands can form $$\mathrm{d} \pi-\mathrm{d} \pi$$ bond with transition metals
B
The $$\mathrm{N}-\mathrm{N}$$ single bond is as strong as the $$\mathrm{P}-\mathrm{P}$$ single bond
C
Nitrogen has unique ability to form $$p \pi-p \pi$$ multiple bonds with nitrogen, carbon and oxygen
D
Nitrogen cannot form $$\mathrm{d} \pi-\mathrm{p} \pi$$ bond as other heavier elements of its group
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