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A solution of slowly turns green when concentrated HCl is added to it. It is due to the formation of:
[Cr(HβO)β]Β²βΊ
[CrClβ]Β²β»
[Cr(NOβ)β]Β²β»
[Cr(OH)β]Β²β»
Silver iodide is used to produce artificial rain because:
It is easily prepared
Its structure is ice-like
It can easily be sprayed at high altitude
It is insoluble in rain water