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Consider the following metal complexes : [ Co( NH_3)]^3+ [ CoCl ( NH_3)_5]^2+ [ Co( CN )_6]^3- [ Co ( NH_3)_5(H_2O)]^3+ The spin-only magnetic moment…

JEE Main 2022 — Chemistry Inorganic Chemistry

2022integermedium

Consider the following metal complexes :

[Co(NH3)]3+{[\mathrm{Co}({\mathrm{NH}}_{3})]}^{3+}[Co(NH3​)]3+

[CoCl(NH3)5]2+{[\mathrm{CoCl}{({\mathrm{NH}}_{3})}_{5}]}^{2+}[CoCl(NH3​)5​]2+

[Co(CN)6]3−{[\mathrm{Co}(\mathrm{CN}{)}_{6}]}^{3-}[Co(CN)6​]3−

[Co(NH3)5(H2O)]3+{[\mathrm{Co}{({\mathrm{NH}}_{3})}_{5}({H}_{2}O)]}^{3+}[Co(NH3​)5​(H2​O)]3+

The spin-only magnetic moment value of the complex that absorbs light with shortest wavelength is B.M. (Nearest integer)

Official previous-year question

Held on 25 Jul 2022 · Verified 6 Jul 2026.

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