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18 Cards in this Set
- Front
- Back
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Alkali metals
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-have 1 valence electrons
-form cations(positive charge) -most reactive metals in any period. -found in compounds |
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Alkali earth metals
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-have 2 valence electrons
-form cations(postively charge) -found in compounds |
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Transition metals
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-can lose electrons from more than 1 energy level
-can form ions with more than 1 charge. -firn colored compnents |
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Halogens
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-have 7 valence electrons
-gain electrons which form anions with a negative charge |
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Noble Gases
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-have 8 valence electrons
-do not react with other elements |
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trends in Atomic Radii
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trend in a period: atoms decrease in size
trends in group:atoms increase in size |
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cations
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-positively charged ions
-form when an atom loses valence electron. -have a smaller radii from which they are formed |
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anions
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-negatively charged ions
-formed when atoms gain valence electrons -have a larger radi from which they are formed |
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Ionization energy
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amount of energy requierd to remove an electron from a gaeous atom.
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electromagnitvity
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tendency of an atom to attract electrons in a chemically bond.
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trends in ionization energy
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trend in a group:IE decrease
trend in a period:IE increases |
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Metallic Character
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the tendacy for an atom to lose electrons
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the greater the _______, the more likely it is to ____ electrons.
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1.character
2.lose |
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Trends in Metallic Character
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trend in a group: MC increases
trend in a period:MC decreases |
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metals
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-low Ionization energy
-low electronegativity -larger radii |
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nonmetals
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-high Ionization energy
-high electronegativity -small radii |
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cations get ____.
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bigger
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anions get ____.
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smaller
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