Summary of Periodic Table Trends

Summary of Periodic Trends

Example: Periodic Trends

1. Ionization energy decreases when the atomic size decreases
2. As atomic size increases it gets easier to add an additional electron
3. Mg2+ is the same size as Ne since they are isoelectronic

1. False, ionization energy is high for small atoms
2. False, as atomic size increases, it is harder to add additional electrons
3. False, Mg2+ and Ne have the same # of electrons, but Mg2+ has more protons, so it has a higher Zeff and can pull the electrons in closer, resulting in Mg2+ having a smaller atomic radius than Ne!