Answer:
If an element has 3 valence electrons, it means that it can form chemical bonds with other atoms by sharing or transferring those 3 valence electrons. The resulting compound will have a chemical formula and properties that depend on the specific elements involved in the bonding and the arrangement of the atoms in the compound. Some elements with 3 valence electrons include boron (B), aluminum (Al), and phosphorus (P). These elements are commonly found in compounds such as borax (Na2B4O7), alum (KAl(SO4)2), and phosphoric acid (H3PO4), respectively.