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Chemistry Trends (Metallic Character/Metallic Reactivity (The tendency of…

- - - - Metals are on the left side of the periodic table and they have fewer protons in their nucleus that are holding in the atom’s electrons
    - - There is more shielding, so outer electrons are easier to lose
- - - - Non-metals are on the right side of the periodic table and they have more protons in their nucleus that attract outer electrons
    - - Less electron energy levels and therefore a greater attraction to the nucleus for electrons
- - - - There is an extra energy level of electrons that will shield the outer electrons from the nucleus
    - - The nucleus loses protons and the atom has the same number of energy levels as you move across a period
- - - - There are more energy levels of electrons and therefore more shielding
    - - As you move across a period right-to-left, an atom loses a positively charged proton and therefore its electrons become slightly less tight and compact
- - - - They gain an electron, which leads to more shielding
    - - They lose an electron, which means less shielding
- - - - There are more protons in the nucleus pulling in electrons, so it requires more energy to remove an outer electron
    - - There are fewer energy levels and less shielding, so the outer electrons are more tightly held by the nucleus
- - - - There are fewer energy levels of electrons shielding/repelling new outer electrons
    - - There are more protons in the nucleus attracting outer electrons
- - - - There is one fewer energy levelof electrons that will separate the outer electrons from the nucleus
    - - The nucleus gains protons and the atom has the same number of energy levels as you move across a period