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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