Which of the following pairs involves isoelectronic ions? Options: A . &nbsp Mn3+ and Fe2+ B . &nbsp Mn2+ and Fe3+ C . &nbspCr3+ and mn2+ D . &nbspFe2+ and CO2+

Which of the following pairs involves isoelectronic ions?

Question

Which of the following pairs involves isoelectronic ions?

Options:

A . Mn3+ and Fe2+

B . Mn2+ and Fe3+

C . Cr3+ and mn2+

D . Fe2+ and CO2+

Answer: Option B
:
B
Mn

^{2 +}

and Fe

^{3 +}

ions have 23 electrons, thus, they are isoelectronic.

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