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Lab Review

Lab Review. It’s in the Cards Straw Lab. Atomic radius. Increases down a group more energy levels Decreases across a period increasing attraction by additional proton-electron pairs. Ionization Energy. Decreases down groups valence electrons further away from protons

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Lab Review

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  1. Lab Review It’s in the Cards Straw Lab

  2. Atomic radius • Increases down a group • more energy levels • Decreases across a period • increasing attraction by additional proton-electron pairs

  3. Ionization Energy • Decreases down groups • valence electrons further away from protons • Increases across periods • valence electrons closer to protons

  4. Electronegativity • Decreases down groups • shared electrons are further from pull of protons • Increases across periods • same principal energy level, but more protons

  5. Periodicity • has a pattern • repetition of the pattern • on the periodic table, row after row follows a similar pattern in its properties

  6. Atomic radius • Which is smallest? • lithium • potassium • rubidium • Which is largest? • boron • nitrogen • fluorine

  7. Ionization energy • Which has the lowest ionization energy? • magnesium • calcium • strontium • Which has the highest ionization energy? • aluminum • phosphorus • chlorine

  8. Electronegativity • Which has the lowest electronegativity? • aluminum • gallium • indium • Which has the highest electronegativity? • calcium • germanium • bromine

  9. Interpreting definitions • Which element is most likely to have an electron pulled off? • sodium • potassium • rubidium • Which element is most likely to pull shared electrons towards itself? • fluorine • chlorine • bromine

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