04/12/2023Russell Godman
PERIODIC TABLE OF ELEMENTS
04/12/2023Russell Godman
04/12/2023Russell Godman
8 Groups of The Periodic Table NonmetalsAlkali MetalsAlkaline Earth MetalsTransition MetalsMetalsMetalloidsHalogensNoble GasesRare Earth Metals
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Properties of The Elemental Groups Nonmetals
high ionization energies High electronegativities Poor thermal conductors Poor electrical conductors
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Alkali Metals Lower densities than other metals One loosely bound valence electron Largest atomic radii in their periods Low electronegativities Highly reactive
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Alkaline Earth Metals Two electrons in the outer shell Two electrons in the outer shell Low electronegativities Readily form divalent cations.
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Transition Metals Low ionization energies Positive oxidation states High melting points High boiling points High electrical conductivity Malleable
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Metals Solids at room temperature (except
mercury) High melting points High densities Low electronegativities Malleable Thermal conductors Electrical conductors
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Metalloids Electronegativities between those of
metals and nonmetals Ionization energies between those of
metals and nonmetals Possess some characteristics of
metals/some of nonmetals Reactivity depends on properties of
other elements in reaction
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Halogens Very high electronegativities Seven valence electrons (one short of a
stable octet) Highly reactive, especially with alkali
metals and alkaline earths
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Noble Gases Fairly nonreactive Complete valence shell High ionization energies Very low electronegativities Low boiling points (all gases at room
temperature)
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Atomic Number
Relative Atomic Mass
Symbol
Element Name
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Atomic Number
The number of Protons in the nucleus
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Relative Atomic Mass
The average mass of Protons, Neutrons, and Electrons in a single atom
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Symbol
The symbol of the element in question
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Element Name
Exactly what it says