With iodide, the solvate $\ce{NaI \cdot 3(CH3)2CO}$ can be formed, in which each $\ce{Na+}$ is coordinated by 6 acetone ligands via oxygen lone pairs, and the $\ce{I-}$ ions fill in the gaps between these octahedral units, being surrounded by the methyl groups of the acetones.
Randomization is a sampling method used in scientific experiments. It is commonly used in randomized controlled trials in experimental research.
Remote Patient Randomization. 1  Simplification of clinical trial data input, clinical trial management and output. 2  Less error prone due to no manual interference. 3  Larger amount of clinical trial data can be collected/dispensed using IVR / IVRS. 4  It makes the whole process less time consuming.