the periodic table of elements 1870 dimitri mendeleev 1 st orderly arrangement of elements not...
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The Periodic Table of ElementsThe Periodic Table of Elements 1870 Dimitri Mendeleev1870 Dimitri Mendeleev 11stst orderly arrangement of orderly arrangement of
elementselements Not all elements fit in orderNot all elements fit in order Left blanks were elements Left blanks were elements
could becould be
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IUPAC – most common versionIUPAC – most common version PeriodPeriod – rows of increasing atomic mass – rows of increasing atomic mass GroupGroup – columns of elements with similar – columns of elements with similar
propertiesproperties 3 types of elements3 types of elements::
Metals – good conductors; most elementsMetals – good conductors; most elements Nonmetals – far right hand sideNonmetals – far right hand side
Semiconductors/metalloids – stair step in between; Semiconductors/metalloids – stair step in between; conductors some situationsconductors some situations
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The Main Groups of The Main Groups of ElementsElements
““Representative Elements”Representative Elements”
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Metals, Nonmetals, MetalloidsMetals, Nonmetals, Metalloids
MetalsMetals - conductors of electricity, - conductors of electricity, luster, malleable, reactive, solidsluster, malleable, reactive, solids
NonmetalsNonmetals - not conductors of - not conductors of electricity, reactive & non-electricity, reactive & non-reactive, gases, liquids and solidsreactive, gases, liquids and solids
MetalloidsMetalloids - semiconductors, - semiconductors, solidssolids
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7 major groups of elements7 major groups of elements
Alkali metalsAlkali metals Alkaline Earth MetalsAlkaline Earth Metals Transition MetalsTransition Metals MetalloidsMetalloids HalogensHalogens Nobel GasesNobel Gases Lanthanide/ActinidesLanthanide/Actinides
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Alkali MetalsAlkali Metals
Group 1 Group 1 Li, Na, K, Rb, Cs, Li, Na, K, Rb, Cs,
FrFr Highly reactive with Highly reactive with
water, can burn in water, can burn in airair
Soft, shiny gray Soft, shiny gray
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Alkaline Earth MetalsAlkaline Earth Metals
Group 2 Group 2
Be, Mg, Ca, Sr, Be, Mg, Ca, Sr, Ba, RaBa, Ra
Harder, denser, Harder, denser, stronger than stronger than alkali metalsalkali metals
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Transition metalsTransition metals Found in middle of chartFound in middle of chart Place where “metals” are foundPlace where “metals” are found
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MetalloidsMetalloids
Have properties of Have properties of metals and nonmetalsmetals and nonmetals
Aka: Aka: semiconductorssemiconductors Used in computer Used in computer
chips, can “print” chips, can “print” electric circuitselectric circuits
Ex: silicon/germaniumEx: silicon/germanium
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HalogensHalogens
Found in group 17Found in group 17
F, Cl, Br, I, AsF, Cl, Br, I, As Gases (Br liquid) and Gases (Br liquid) and
highly reactivehighly reactive Like to react with Like to react with
metals from groups 1 metals from groups 1 & 2& 2
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Nobel GasesNobel Gases
Group 18Group 18He, Ne, Ar, Kr, He, Ne, Ar, Kr, Xe, RnXe, Rn
Inert gases - Inert gases - aren’t reactive aren’t reactive with other with other elementselements
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Lanthanides and ActinidesLanthanides and Actinides
Found “pulled” out on Found “pulled” out on the periodic chartthe periodic chart
Used in TV, Used in TV, computerscomputers
Radioactive and used Radioactive and used in nuclear energy in nuclear energy plants and for bombsplants and for bombs
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Synthetic ElementsSynthetic Elements
Produced in Produced in laboratorylaboratory
Technetium and Technetium and PromethiumPromethium
Used in “xray” Used in “xray” machinesmachines
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LABEL THE PERIODIC TABLE:LABEL THE PERIODIC TABLE:Alkali MetalsAlkali MetalsAlkaline Earth MetalsAlkaline Earth MetalsHalogensHalogens
Noble GasesNoble GasesSemi-conductorsSemi-conductorsTransition metalsTransition metalsLanthanides/ActinidesLanthanides/Actinides
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Trends in the periodic tableTrends in the periodic tableSize of atomsSize of atoms
Increases from right to leftIncreases from right to left Increases as go down a groupIncreases as go down a group
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Trends in the periodic tableTrends in the periodic table ReactivityReactivity
More reactive on “edges” (except grp 18)More reactive on “edges” (except grp 18) Left side – more reactive at bottom of groupLeft side – more reactive at bottom of group
Right side – more reactive at top of groupRight side – more reactive at top of group
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Arrange these atoms from smallest Arrange these atoms from smallest to largestto largest
Sodium, chlorine, silicon, argon, magnesiumSodium, chlorine, silicon, argon, magnesium Phosphorus, antimony, nitrogen, bismuthPhosphorus, antimony, nitrogen, bismuth
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Arrange these atoms from most Arrange these atoms from most reactive to least reactivereactive to least reactive
Radium, calcium, beryllium, strontium, magnesium, Radium, calcium, beryllium, strontium, magnesium, bariumbarium
Iodine, astatine, fluorine, bromine, chlorineIodine, astatine, fluorine, bromine, chlorine Rubidium, ruthenium, calcium, selenium, chlorine, Rubidium, ruthenium, calcium, selenium, chlorine,
XenonXenon