JEE Main 2026 — d and f Block Elements Question with Solution
JEE Main 2026 (28 January Shift 2)
Question
Consider the following statements about manganate and permanganate ions. Identify the correct statements.
A. The geometry of both manganate and permanganate ions is tetrahedral.
B. The oxidation states of Mn in manganate and permanganate are +7 and +6, respectively.
C. Oxidation of Mn (II) salt by peroxodisulphate gives manganate ion as the final product.
D. Manganate ion is paramagnetic and permanganate ions is diamagnetic.
E. Acidified permanganate ion reduces oxalate, nitrite and iodide ions.
Choose the correct answer from the options given below :
A. The geometry of both manganate and permanganate ions is tetrahedral.
B. The oxidation states of Mn in manganate and permanganate are +7 and +6, respectively.
C. Oxidation of Mn (II) salt by peroxodisulphate gives manganate ion as the final product.
D. Manganate ion is paramagnetic and permanganate ions is diamagnetic.
E. Acidified permanganate ion reduces oxalate, nitrite and iodide ions.
Choose the correct answer from the options given below :
Choose an option
Show full solutionCorrect option: B
Correct answer
BA and D Only
Step-by-step explanation
Manganate ion →
Permanganate ion →
(A) Both are tetrahedral ( hybridisation) TRUE
(B) has Mn in +7 oxidation state; has Mn in +6 oxidation state. The statement says +7 for manganate and +6 for permanganate, which is reversed. FALSE
(C) Oxidation of by peroxodisulphate () gives permanganate ion (), not manganate ion. FALSE
(D) is diamagnetic; is paramagnetic. TRUE
(E) Acidified permanganate ion oxidises (not reduces) oxalate, nitrite and iodide ions. FALSE
Correct statements: A and D only.
Permanganate ion →
(A) Both are tetrahedral ( hybridisation) TRUE
(B) has Mn in +7 oxidation state; has Mn in +6 oxidation state. The statement says +7 for manganate and +6 for permanganate, which is reversed. FALSE
(C) Oxidation of by peroxodisulphate () gives permanganate ion (), not manganate ion. FALSE
(D) is diamagnetic; is paramagnetic. TRUE
(E) Acidified permanganate ion oxidises (not reduces) oxalate, nitrite and iodide ions. FALSE
Correct statements: A and D only.
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This is a previous-year question from JEE Main 2026, covering the d and f Block Elements chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.