A divalent anion adopts the following arrangement in which a metal ion occupies only tetrahedral voids. If   ${10}^{-2}$moles of the smallest repeating units of below arrangement of closest packing of metal are present in 0.8L aqueous solution, then reduction potential of the metallic electrode is 0.44 V. How many number of tetrahedral voids is occupied by metal ions in the repeated unit of such arrangement? (Adjust the value to nearest integer).
Given SRP of metal is 0.5 V.
 
$2.303\frac{RT}{F}=0.06$