what will be the group number of element A having three electrons in its outermost shell??
most of the answers I received is 13 group why 3 group is not the answer???
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All elements in Group 13 have three electrons in their outermost energy level. The two most popular elements in this group are Boron and Aluminum. Both Boron and Aluminium have 3 valence electrons, but Boron is considered a metalloid and Aluminium is considered a metal
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