matals
Elements in Groups 1 and 2, sometimes 3, of the periodic table [elements with 1, 2, and 3 valence electrons, i.e. potassium (K), calcium (Ca), and aluminum (Al), respectively]
Uranium loose electrons becoming a cation.
Non-metals gain electrons.
Metals because metals are mostly on the left side of the Periodic Table and have fewer electrons.
Non-metals
matals
Elements in Groups 1 and 2, sometimes 3, of the periodic table [elements with 1, 2, and 3 valence electrons, i.e. potassium (K), calcium (Ca), and aluminum (Al), respectively]
Uranium loose electrons becoming a cation.
because they lose electrons
Metals lose electrons, nonmetals gain electrons.
Anion.
Valence electrons determine the reactivity of the element.
Non-metals gain electrons.
nonmetals
protons and electrons
metals