Y=2;8;18;18;3 which group is in Y in

Group 13

Explanation:

"Y" is actually an element known as Indium on the periodic table and to be able to find out the group it belongs to,one has to first add up the numbers ,that is,2+8+18+18+3 which will give you answer of 49 so that  when you check on the periodic table one will  find that it belongs to group 13.

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