Arsenic tri Ioide or diArsenic tri Ioide.
As is the symbol for Arsenic Arsenic commonly has a charge of of +3 ( or -3. +5)
l is the symbol of Iodine. Iodine commonly has a charge of -1
As Iodine has a higher electronegativity than Arsenic the Iodine will gain the electrons ( be reduced ) and the Arsenic will lose electrons ( be oxidized)
This is an unusual form of Arsenic because each of the atoms ends up with a charge of only + 1.5
The chemical name is diarsenic triiodide.
The names of such compounds are formed according to the pattern:
multiplying prefix + name of first element multiplying prefix + stem of second element + ide (two words)
The multiplying prefixes are di- for "two" and tri- for "three".
The parts of the name are di-arsenic tri-iod-ide, so the name of the compound is