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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An element is a material that consists of a single type of atom. Each atom type contains the same number of protons. Chemical bonds link elements together to form more complex molecules called compounds. A compound consists of two or more types of elements held together by covalent or ionic bonds.
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