Skip to main content

The correct increasing order of spin-only magnetic moment values of the complex ions [ MnBr_4 ]^2-( A), [ Cu ( H_2 O )_6 ]^2+( B), [ Ni( CN)_4 ]^2-(…

JEE Main 2026 — Chemistry Inorganic Chemistry

2026mcqhard

The correct increasing order of spin-only magnetic moment values of the complex ions [MnBr4]2−(A),[Cu(H2O)6]2+(B),[Ni(CN)4]2−(C)\left[\mathrm{MnBr}_{4}\right]^{2-}(\mathrm{A}),\left[\mathrm{Cu}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}(\mathrm{B}),\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{2-}(\mathrm{C})[MnBr4​]2−(A),[Cu(H2​O)6​]2+(B),[Ni(CN)4​]2−(C) and [Ni(H2O)6]2+(D)\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}(\mathrm{D})[Ni(H2​O)6​]2+(D) is :

Official previous-year question

Held on 28 Jan 2026 · Verified 6 Jul 2026.

Options

  1. A

    C=D<B<A\mathrm{C}=\mathrm{D} < \mathrm{B} < \mathrm{A}C=D<B<A

  2. B

    C<B<D<A\mathrm{C} < \mathrm{B} < \mathrm{D} < \mathrm{A}C<B<D<A

  3. C

    A=B<D<C\mathrm{A}=\mathrm{B} < \mathrm{D} < \mathrm{C}A=B<D<C

  4. D

    A=B<C<DA=B < C < DA=B<C<D

Did you get this right?

Sign in to track your attempts and accuracy.

Your note

Sign in to keep a private note on this question. Nothing you write is ever public.

JEE Main Inorganic Chemistry in other years

Inorganic Chemistry 2025Inorganic Chemistry 2024Inorganic Chemistry 2023Inorganic Chemistry 2022Inorganic Chemistry 2021Inorganic Chemistry 2020Inorganic Chemistry 2019Inorganic Chemistry 2018Inorganic Chemistry 2017Inorganic Chemistry 2016Inorganic Chemistry 2015Inorganic Chemistry 2014

More JEE Main Inorganic Chemistry questions

It is noticed that $\mathrm{Pb}^{2+}$ is more stable than $\mathrm{Pb}^{4+}$ but $\mathrm{Sn}^{2+}$ is less stable than $\mathrm{Sn}^{4+}$. Observe the following reactions. $\mathrm{PbO}_{2}+\mathrm{Pb} \rightarrow 2 \mathrm{PbO} ; \Delta_{\mathrm{r}} \mathrm{G}^{\circ}(1)$ $\mathrm{SnO}_{2}+\mathrm{Sn} \rightarrow 2 \mathrm{SnO} ; \Delta_{\mathrm{r}} \mathrm{G}^{\circ}(2)$ Identify the correct set from the following

2026medium

An excess of AgNO$_3$ is added to $100$ mL of a $0.05$ M solution of tetraaquadichloridochromium (III) chloride. The number of moles of AgCl precipitated will be __________ $\times 10^{-3}$. (Nearest integer)

2026medium

Which of the following elements has the highest electronegativity?

2026easy

First and second ionization enthalpies of lithium are $520$ kJ mol$^{-1}$ and $7297$ kJ mol$^{-1}$ respectively. Energy required to convert $3.5$ mg lithium (g) into $\text{Li}^{2+}$(g) $[\text{Li(g)} \rightarrow \text{Li}^{2+}\text{(g)}]$ is _______ kJ mol$^{-1}$. (nearest integer) [Molar mass of Li $= 7$ g mol$^{-1}$]

2026medium

Identify the molecule $(X)$ with maximum number of lone pairs of electrons (obtained using Lewis dot structure) among $\mathrm{HNO}_{3}, \mathrm{H}_{2} \mathrm{SO}_{4}, \mathrm{NF}_{3}$ and $\mathrm{O}_{3}$. Choose the correct bond angle made by the central atom of the molecule $(\mathrm{X})$.

2026hard
View all Inorganic Chemistry questions

Other Chemistry topics for JEE Main

Physical Chemistry

1826 questions

Organic Chemistry

1783 questions

Keep practicing Inorganic Chemistry

Work through every JEE Main Inorganic Chemistry PYQ, year by year.

Browse all Chemistry topics