Which of the following compounds can exist?

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(C) In the case of $BiI_5$,the large size of $I^-$ ions and the low oxidizing power of $Bi(V)$ make it unstable. $Bi(V)$ is a strong oxidizing agent a

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$BiF_5$

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(C) In the case of $BiI_5$,the large size of $I^-$ ions and the low oxidizing power of $Bi(V)$ make it unstable. $Bi(V)$ is a strong oxidizing agent and it oxidizes $I^-$ to $I_2$,so $BiI_5$ does not exist. $MnF_7$ does not exist because manganese cannot exhibit a $+7$ oxidation state with fluorine due to the lack of sufficient energy to promote electrons and steric hindrance. $SCl_6$ does not exist due to steric hindrance caused by the six large chlorine atoms around the sulfur atom. $BiF_5$ is a stable compound because fluorine is a small,highly electronegative atom that can stabilize the $+5$ oxidation state of bismuth.

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