The isoelectronic pair of ions is

  • [KVPY 2012]
  • A
    $Sc ^{2+}$ and $V ^{3+}$
  • B
    $Mn ^{2+}$ and $Fe ^{3+}$
  • C
    $Mn ^{3+}$ and $Fe ^{2+}$
  • D
    $Ni ^{3+}$ and $Fe ^{2+}$

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  • [AIIMS 2007]

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