Which of the following pairs involves isoelectronic ions?

  • A
    $Mn^{3+}$ and $Fe^{2+}$
  • B
    $Mn^{2+}$ and $Fe^{3+}$
  • C
    $Cr^{3+}$ and $Fe^{2+}$
  • D
    $Fe^{2+}$ and $Co^{2+}$

Explore More

Similar Questions

What are the isotopes of chlorine? How do they differ from each other?

What are atomic number,nucleons,and mass number? Give the relation between them.

An element has an electronic configuration of $2, 8, 18, 1$. If its atomic weight is $63$,then how many neutrons will be present in its nucleus?

If a neutral atom has $2, 8,$ and $5$ electrons in $K, L,$ and $M$ shells respectively,what is its atomic number?

Which of the following species contains $20$ electrons?

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo