Chapter 6
Terms
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- Lanthanide Series
- cut out from periodic table. the top part (inner transition metals)
- Henri Moseley
- organized periodic table by protons
- Trend in Ionic Size
- Cations decrease across, Anions decrease across, both increase as you go down
- Periodic Law
- when organized by increasing atomic number there is a period repitetion of physical and chemical properties
- Representative Elements
- groups 1 and 2 and 13 - 18. ALL of the A groups (alkaline earth, alkali, noble, halogens, and all other gasses.)
- Noble Gasses
- group 18 or 8A
- Mendeleev
- organized elements in period table of increasing mass
- Alkaline Earth Metals
- Group 2 or 2A
- Dobereiner
- Chemist who organized elements into triads
- atomic radius
- one half the distance of two COMBINED atoms
- Organization of modern periodic table
- organized by atomic number
- Cation
- when electrons are lost -- these ions are smaller than they were originally
- Actinide Series
- cut out from periodic table. the bottom part (inner transition metals)
- Alkali Metals
- group 1 or 1A
- Transition Metals
- groups 3-12
- Anion
- when electrons are gained these are larger
- Blocks of Elements
- Alkali and Alkaline earth, helium are S blocks, Gas and metaliods are P, transition metals are D and inner transitioni metals are F
- Non-Metals
- poor conductors and when solid are brittle
- Metaliods
- mix of the metals and nonmetals and to change its properties change the enviorment
- Metaliods
- stair step lines. B, Si, Ge, As, Sb, Te, At
- Metals
- Good conductors, ductile and maleable
- Trend in First Ionazation Energy
- Increases across, decreases down
- Ions
- formed when electrons are transferred from atom to atom
- Halogens
- group 17 or 7A
- Trend in Atomic Size
- Decreases across, and increases down