Polonium tetraiodide is a binary inorganic compound of polonium and iodine with the chemical formula PoI
4. The compound forms volatile black crystals.
Synthesis
1. Action of iodine vapor on polonium metal:
- Po 2 I2 → PoI4
2. Dissolution of polonium dioxide in hydroiodic acid:
- PoO2 4 HI → PoI4 2 H2O
Properties
Physical properties
The compound forms black crystals that are insoluble in water.
Chemical properties
The compound reacts with hydroiodic acid to form hexaiodopolonic acid:
- PoI4 2 HI → H2[PoI6]
It can be reduced by hydrogen sulfide to yield polonium metal. It decomposes on heating.
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