Ionic radius (in $\mathring{A}$) of $As^{3+}$,$Sb^{3+}$ and $Bi^{3+}$ follow the order:

  • A
    $As^{3+} > Sb^{3+} > Bi^{3+}$
  • B
    $Sb^{3+} > Bi^{3+} > As^{3+}$
  • C
    $Bi^{3+} > As^{3+} > Sb^{3+}$
  • D
    $Bi^{3+} > Sb^{3+} > As^{3+}$

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