I and Cl are both halogens. Each one of them will have 7 valence electrons.
There are total of 5 I and Cl combined.
So, number of valence electrons in I and Cl is 5*7 = 35
Also there is 1 negative charge which is also a valence electron.
So, total number of valence electrons in ICl4- is 35 + 1 = 36
Answer: 36
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