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The sum of the spin only magnetic moment values (in B.M.) of \( [\text{Mn}(\text{Br})_6]^{3-} \) and \( [\text{Mn}(\text{CN})_6]^{3-} \) is __________.

The pair(s) of complexes wherein both exhibit tetrahedral geometry is(are):
\( (\text{Note: py = pyridine}) \)
\( \text{Given: Atomic numbers of Fe, Co, Ni and Cu are } 26, 27, 28 \text{ and } 29, \text{ respectively} \)

The total number of all possible isomers for the square planar complex with formula \( \mathrm{K[M(NCS)(NO_2)(gly)]} \) is ______.
(\( \mathrm{M} = \) metal ion and \( \mathrm{gly} = \mathrm{NH_2CH_2COO^-} \))

The total number of possible isomers for \( [\text{Pt}(\text{NH}_3)_4\text{Cl}_2]\text{Br}_2 \) is \( \_\_\_\_\_ \).

Among \( [\mathrm{I_3}]^{+} \), \( [\mathrm{SiO_4}]^{4-} \), \( \mathrm{SO_2Cl_2} \), \( \mathrm{XeF_2} \), \( \mathrm{SF_4} \), \( \mathrm{ClF_3} \), \( \mathrm{Ni(CO)_4} \), \( \mathrm{XeO_2F_2} \), \( [\mathrm{PtCl_4}]^{2-} \), \( \mathrm{XeF_4} \) and \( \mathrm{SOCl_2} \), the total number of species having \( sp^3 \) hybridised central atom is \( \_\_\_\_\_\_\_ \).

Among the following options, select the option in which each complex in Set-I shows geometrical isomerism and the two complexes in Set-II are ionization isomers of each other. \( [\mathrm{en} = \mathrm{H_2NCH_2CH_2NH_2}] \)

Among the following complexes, the total number of diamagnetic species is ____________.
\( [\text{Mn(NH}_{3})_{6}]^{3+} \), \( [\text{MnCl}_{6}]^{3-} \), \( [\text{FeF}_{6}]^{3-} \), \( [\text{CoF}_{6}]^{3-} \), \( [\text{Fe(NH}_{3})_{6}]^{3+} \), and \( [\text{Co(en)}_{3}]^{3+} \)
[Given, atomic number: \( \text{Mn} = 25 \), \( \text{Fe} = 26 \), \( \text{Co} = 27 \); en \( = \text{H}_{2}\text{NCH}_{2}\text{CH}_{2}\text{NH}_{2} \)]

LIST-I contains metal species and LIST-II contains their properties.

LIST-I	LIST-II
(I) \( [\mathrm{Cr}(\mathrm{CN})_6]^{4-} \)	(P) \( t_{2g} \) orbitals contain \( 4 \) electrons
(II) \( [\mathrm{RuCl}_6]^{2-} \)	(Q) \( \mu (\text{spin-only}) = 4.9\,\mathrm{BM} \)
(III) \( [\mathrm{Cr}(\mathrm{H_2O})_6]^{2+} \)	(R) low spin complex ion
(IV) \( [\mathrm{Fe}(\mathrm{H_2O})_6]^{2+} \)	(S) metal ion in \( 4+ \) oxidation state
	(T) \( d^4 \) species

[Given: Atomic number of \( \mathrm{Cr} = 24 \), \( \mathrm{Ru} = 44 \), \( \mathrm{Fe} = 26 \)]
Match each metal species in LIST-I with their properties in LIST-II, and choose the correct option:

PARAGRAPH – 2
When potassium iodide is added to an aqueous solution of potassium ferricyanide, a reversible reaction is observed in which a complex P is formed. In a strong acidic medium, the equilibrium shifts completely towards P. Addition of zinc chloride to P in a slightly acidic medium results in a sparingly soluble complex Q.
The number of zinc ions present in the molecular formula of Q is _____.

10.

The correct option(s) about entropy \( (S) \) is(are)

11.

Among \( \text{V(CO)}_{6} \), \( \text{Cr(CO)}_{5} \), \( \text{Cu(CO)}_{3} \), \( \text{Mn(CO)}_{5} \), \( \text{Fe(CO)}_{5} \), \( [\text{Co(CO)}_{3}]^{3-} \), \( [\text{Cr(CO)}_{4}]^{+} \) and \( \text{Ir(CO)}_{3} \), the total number of species isoelectronic with \( \text{Ni(CO)}_{4} \) is ______.
[Given, atomic number: \( \text{V} = 23 \), \( \text{Cr} = 24 \), \( \text{Mn} = 25 \), \( \text{Fe} = 26 \), \( \text{Co} = 27 \), \( \text{Ni} = 28 \), \( \text{Cu} = 29 \), \( \text{Ir} = 77 \)]

12.

Consider that the coordinating atoms of the ligands in \( \text{cis-}[ \mathrm{Co(NH_3)_4Cl_2}] \mathrm{Cl} \) and \( \text{mer-}[ \mathrm{Co(NH_3)_3Cl_3}] \) octahedral complexes are at the vertices of an octahedron. The sum of total number of the triangular faces in both the complexes having one \( \mathrm{N} \) atom and two \( \mathrm{Cl} \) atoms at their corners is ________.

13.

Match the electronic configurations in List-I with appropriate metal complex ions in List-II and choose the correct option. [Atomic Number : Fe= 26, Mn = 25, Co= 27]

14.

The correct order of the wavelength maxima of the absorption band in the ultraviolet-visible region for the given complexes is:

15.

The calculated spin only magnetic moments of \( [\mathrm{Cr(NH_3)_6}]^{3+} \) and \( [\mathrm{CuF_6}]^{3-} \) in \( \text{BM} \), respectively, are: (Atomic numbers of \( \mathrm{Cr} \) and \( \mathrm{Cu} \) are \( 24 \) and \( 29 \), respectively)

16.

Among \( [\mathrm{Co(CN)}_{4}]^{4-}, [\mathrm{Co(CO)}_{3}(\mathrm{NO})], \mathrm{XeF}_{4}, [\mathrm{PCl}_{4}]^{+}, [\mathrm{PdCl}_{4}]^{2-}, [\mathrm{ICl}_{4}]^{-}, [\mathrm{Cu(CN)}_{4}]^{3-} \) and \( \mathrm{P}_{4} \) the total number of species with tetrahedral geometry is ________.

17.

The complex(es), which can exhibit the type of isomerism show by \( \left[ \mathrm{Pt}\left(\mathrm{NH_3}\right)_2 \mathrm{Br_2} \right] \), is (are) \([ \mathrm{en} = \mathrm{H_2NCH_2CH_2NH_2} ]\):

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JEE Advanced 2026 Paper - 1

JEE MainsJEE AdvanceBITSATJEE Advance | PYQ

JEE Mains JEE Advance BITSAT
JEE Advance | PYQ