Simplified absorption spectra of three complexes ((i) and (ii) and (iii)) of ${M}^{+n}$ ion are provided below; their ${\lambda }_{\mathrm{max}}$ values are marked as $A,B$ and $C$ respectively. The correct match between the complexes and their ${\lambda }_{\mathrm{max}}$ values is: ![JEE Main 2020 Chemistry, Coordination Compounds — question figure](https://prepforbharat.s3.ap-south-1.amazonaws.com/exam/615f0e999476412f48314daf/Chemistry/images/Coordination_Compounds/648b5a67417cc3fb48d669c8/question_1__q_648b5a67417cc3fb48d669c8__cdn-question-pool.getmarks.app__8cfb2407-d53a-4f22-8cb0-04ece2bd77ff-image__6400969448_final_ppt_sync.png) (i) ${[M(\mathrm{NCS}{)}_{6}]}^{(-6+n)}$ (ii) ${[{\mathrm{MF}}_{6}]}^{(-6+n)}$ (iii) ${[M{({\mathrm{NH}}_{3})}_{6}]}^{n+}$

JEE Main 2020 — Chemistry Inorganic Chemistry

2020mcqmedium

Simplified absorption spectra of three complexes ((i) and (ii) and (iii)) of ${M}^{+n}$ ion are provided below; their ${\lambda }_{\mathrm{max}}$ values are marked as $A,B$ and $C$ respectively. The correct match between the complexes and their ${\lambda }_{\mathrm{max}}$ values is:

JEE Main 2020 Chemistry, Coordination Compounds — question figure

(i) ${[M(\mathrm{NCS}{)}_{6}]}^{(-6+n)}$

(ii) ${[{\mathrm{MF}}_{6}]}^{(-6+n)}$

(iii) ${[M{({\mathrm{NH}}_{3})}_{6}]}^{n+}$

Official previous-year question

Held on 2 Sept 2020 · Verified 6 Jul 2026.

Options

A
$A-(\mathrm{iii}),(B)-(i),C-(\mathrm{ii})$
B
$A-(\mathrm{ii}),(B)-(i),C-(\mathrm{iii})$
C
$A-(\mathrm{ii}),(B)-(\mathrm{iii}),C-(i)$
D
$A-(i),(B)-(\mathrm{ii}),C-(\mathrm{iii})$

Did you get this right?

Solution

Stronger the ligand greater is splitting of d orbitals and smaller will be wave length of light absorbed.

The splitting power of ligands is ${\mathrm{NH}}_{3}>{\mathrm{NCS}}^{-}>{F}^{-}$ So order of wave length of light absorbed is ${\lambda }_{{\mathrm{NH}}_{3}}<{\lambda }_{\mathrm{NC}\bar{S}}<{\lambda }_{{F}^{-}}$

Your note

JEE Main Inorganic Chemistry in other years

Inorganic Chemistry 2026 Inorganic Chemistry 2025 Inorganic Chemistry 2024 Inorganic Chemistry 2023 Inorganic Chemistry 2022 Inorganic Chemistry 2021 Inorganic Chemistry 2019 Inorganic Chemistry 2018 Inorganic Chemistry 2017 Inorganic Chemistry 2016 Inorganic Chemistry 2015 Inorganic Chemistry 2014

Keep practicing Inorganic Chemistry

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

Browse all Chemistry topics

Options

$A-(\mathrm{iii}),(B)-(i),C-(\mathrm{ii})$

$A-(\mathrm{ii}),(B)-(i),C-(\mathrm{iii})$

$A-(\mathrm{ii}),(B)-(\mathrm{iii}),C-(i)$

$A-(i),(B)-(\mathrm{ii}),C-(\mathrm{iii})$

Solution

Stronger the ligand greater is splitting of d orbitals and smaller will be wave length of light absorbed.

JEE Main 2020 — Chemistry Inorganic Chemistry

Options

Did you get this right?

Solution

Your note

JEE Main Inorganic Chemistry in other years

More JEE Main Inorganic Chemistry questions

Other Chemistry topics for JEE Main

Physical Chemistry

Organic Chemistry

Keep practicing Inorganic Chemistry

JEE Main 2020 — Chemistry Inorganic Chemistry

Options

Did you get this right?

Solution

Your note

JEE Main Inorganic Chemistry in other years

More JEE Main Inorganic Chemistry questions

Other Chemistry topics for JEE Main

Physical Chemistry

Organic Chemistry

Keep practicing Inorganic Chemistry