why other ements group.13 form trihalide by reacting with hallogens
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Answer:
Thus, Electronegativity decreases from B to Al and then increases due to discrepancies of an atomic size of the elements.
Explanation:
Element Fluoride Chloride Bromide Iodide
B 3 3 3 3
Al 6 6 (4) 4 4
Ga 6 4 4 4
In 6 6 6 4
Tl 6 6 4
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