What are the periodic table trends?
Yes, all of these trends are true. Metals lose valence electrons more easily when you go down a group due to electron-electron repulsion theory because as you go down a group the atomic radius of the atom increases, which means more electrons in the valence shell. The increase in electrons in the valence shell cause repulsion between the electrons, making it easier to lose these electrons. In addition, it is harder to lose electrons going from left to right due to the same concept, except in this case, as you go to the right, the atoms decrease in atomic radius size and hold on to their electrons more strongly since there are more protons. This attraction between the protons and the electrons not only contributes to a smaller valence shell, but also makes it harder to lose electrons in these atoms. More trends: Electronegativity: Electronegativity is a measure of the tendency of an atom to attract electrons. The electronegativity increases as you go from left to right on the periodic t
