Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 20254 AprilMorning Shift
Exam
JEE Main
Year
2025
Date
4 April
Shift
Morning Shift
Subject
Chemistry
Chapter
d and f Block Elements

JEE Main 2025 · 4 April · Morning Shift · Chemistry · d and f Block Elements

Pair of transition metal ions having the same number of unpaired...

Pair of transition metal ions having the same number of unpaired electrons is :Pair of transition metal ions having the same number of unpaired electrons is :

Options

  1. AV2+,Co2+\mathrm{V}^{2+}, \mathrm{Co}^{2+}
  2. BTii+,Co2+\mathrm{Ti}^{i+}, \mathrm{Co}^{2+}
  3. CFe3+,Cr2+\mathrm{Fe}^{3+}, \mathrm{Cr}^{2+}
  4. DTi3+,Mn2+\mathrm{Ti}^{3+}, \mathrm{Mn}^{2+}

Correct answer

A. V2+,Co2+\mathrm{V}^{2+}, \mathrm{Co}^{2+}

Step-by-step solution

Pair of transition metal ions having the same number of unpaired electrons is :
So V2+&Co2+\mathrm{V}^{2+} \& \mathrm{Co}^{2+} same number of unpaired electron.
Practice d and f Block Elements on Quantrex Academy →

More from d and f Block Elements

Given below are two statements: Statement I: The number of pairs among [Ti^ 4+ , V^ 2+ ]… JEE Main 2026Given below are two statements for catalytic properties of transition metals. Statement… JEE Main 2026The correct order of first (Δ_i H_1) and second (Δ_i H_2) ionisation enthalpy values of… JEE Main 2026The correct statements among the following are. A. Basic vanadium oxide is used in the… JEE Main 2026Given below are two statements : Statement I: Presence of large number of unpaired… JEE Main 2026A paper dipped in a dil. H_2SO_4 solution of ' X ' upon treatment with SO_2 gas turns… JEE Main 2026Which of the following is NOT a physical or chemical characteristics of interstitial… JEE Main 2026Pairs of elements with the same number of electrons in their respective 4f orbital are… JEE Main 2026 Full d and f Block Elements list All JEE Main PYQs