Question

An unknown element X can form a compound with the formula XBr3. In which group on the Periodic Table would element X be found?

(1) 1 (3) 13
(2) 2 (4) 14

Answer 1

The correct answer is option 3 = group 13

Step-by-step explanation:

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In the periodic table the groups are vertical and the horizontal periods. The elements of group 13 such as Aluminum (Al), Boron and others. These elements have 3 valence electrons. Element X needs to have 3 valence electrons since Br accepts an electron and there are 3 bromine.

The correct answer is option 3 = group 13