The Periodic Table Introduction Mendeleev’s Periodic Table Dmitri Mendeleev.
Periodic Table Project
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Transcript of Periodic Table Project
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Periodic Table Project
Landon Stokes & Sydney Hight
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Group 18 Trends• Atomic radii: Atomic radius decreases from left to right within a period because of
effective nuclear charge. As you move from left to right in a period, you are still in the same energy level, which means the electron is still the same distance from the nucleus.
• Ionic Radii: The Noble Gases do not have an ionic radius. This is because they don't form ions.
• Reactivity: Noble Gases are extremely unreactive. This is because non-metals gain electrons. Since the noble gases do not need to gain any electrons because of their "stable octet", they don't react often.
• Electronegativity: Electronegativity is the ability of an atom to gain an electron. Since electronegativity measures the amount of attraction between an atom and an electron, noble gases do not have electronegativity.
• Ionization Energy: Noble Gases have a very stable electron configuration, therefore, they have the highest amount of ionization energy within their periods. It decreases down a family because electrons farther from the nucleus are easier to remove.
• Valence Electrons: The noble gases contain eight valence electrons.
INTERESTING FACT: Most Noble Gases are used for lighting around the world.
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Group 18 Elements
1. Helium (He)2. Neon (Ne)3. Argon (Ar)4. Krypton (Kr)5. Xenon (Xe)6. Radon (Rn)
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Helium
Noble gas configuration: 1s2
Lewis dot: State of matter: GasBoiling point: -268.6 °CMelting Point: -272.0 °CMetallic character: trend decreasing going from left to right
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Neon
Noble gas configuration: [He] 2s2 2p6
Lewis dot: State of matter: GasBoiling point: -246.1 °CMelting Point: -248.6 °CMetallic character: trend decreasing going from left to right
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Argon
Noble gas configuration: [Ne] 3s2 3p6 Lewis dot: State of matter: GasBoiling point: -186.0 °CMelting point: -189.3 °CMetallic character: trend decreasing going from left to right
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Krypton
Noble gas configuration: [Ar] 3d10 4s2 4p6 Lewis dot: State of matter: GasBoiling point: -153.4 °CMelting point: -157.2 °CMetallic character: trend decreasing going from left to right
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Radon
Noble Gas Configuration: [Xe]6s25d6p6
Lewis dot:
State of Matter: GasBoiling Point: -62°CMelting Point: -71°CMetallic Character: trend decreasing going from left to right
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Period 6 Elements1.Cesium (Cs) 13. Thallium (Tl)2. Barium (Ba) 14. Lead (Pb)3. Lutetium (Lu) 15. Bismuth (Bi)4. Hafnium (Gf) 16. Polonium (Po)5. Tantalum (Ta) 17. Astatine (At)6. Tungsten (W) 7. Rhenium (Re)8. Osmium (Os)9. Iridium (Ir)10. Platinum (Pt)11. Gold (Au)12. Mercury (Hg)
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Period 6 Trends• Atomic radii: distance from nucleus to boundary of outermost electron level general
decrease from Cesium Radon • Ionic radii: distance of nucleus to outermost electron level of ions; when an atom is an
anion, the electrons are more attached to the nucleus making the atom smaller, and a cation makes the electrons repel against the nucleus’ charge and make the atom bigger; general decrease from Cesium Radon
• Reactivity: outer electron levels try to gain electrons to fill them to the highest capacity and be “stable,” like the Noble Gases; metals have the most “room” for more electrons, while non-metals and Noble Gases do not. Radon is the most unreactive element in Period 6 because its outer level is full; increase from Cesium Radon
• Electronegativity: an ability of an atom to gain electrons; high electronegativity means the atom attracts many electrons, therefore forming a negative ion; metals on the left side of the table do not have the energy levels filled completely, attracting electrons while the non-metals and noble gases are almost completely/completely filled; general increase from Cesium (least electronegative element) Radon
• Ionization Energy: energy needed to remove 1+ electrons from an ion; alkali metals only have 1 valence electron so it’s hard to give them up, while noble gases have closed shells so they give no electrons up; general increase from Cesium Radon
• Valence Electrons: general increase from Cesium Radon
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Cesium
Noble gas configuration: [Xe] 6s1 State of matter: solidBoiling point: 671 ºCMelting point: 28.5 ºCMetallic character: trend decreasing going from left to right
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Barium
Noble gas configuration: [Xe] 6s2
State of matter: solidBoiling point: 1897ºCMelting point: 727ºCMetallic character: trend decreasing going from left to right
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Lutetium
Noble gas configuration: [Xe] 6s2 5d1
State of matter: solidBoiling point: 3402°CMelting point: 1663°CMetallic character: trend decreasing going from left to right
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Hafnium
Noble gas configuration: [Xe] 6s2 5d2 State of matter: solidBoiling point: 4603°CMelting point: 2233°CMetallic character: trend decreasing going from left to right
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Tantalum
Noble gas configuration: [Xe] 6s2 5d3
State of matter: solidBoiling point: 5458°CMelting point: 3017°CMetallic character: trend decreasing going from left to right
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Tungsten
Noble gas configuration: [Xe] 6s2 5d4
State of matter: solidBoiling point: 5555°CMelting point: 3422°CMetallic character: trend decreasing going from left to right
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Rhenium
• Noble gas configuration: [Xe] 6s2 5d5
• State of matter: solid• Boiling point: 5596°C• Melting point: 3186°C• Metallic character: trend decreasing going
from left to right
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Osmium
Noble gas configuration: [Xe] 6s2 5d6
State of matter: solidBoiling point: 5012°CMelting point: 3033°CMetallic character: trend decreasing going from left to right
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Iridium
Noble gas configuration: [Xe] 6s2 5d7
State of matter: solidBoiling point: 4428°CMelting point: 2446°CMetallic character: trend decreasing going from left to right
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Platinum
Noble Gas Configuration: [Xe]6s25d8
State of Matter: SolidBoiling Point: 3800°CMelting Point: 1772°C
Metallic Character: trend decreasing going from left to right
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Gold
Noble Gas Configuration: [Xe]6s25d9
State of Matter: SolidBoiling Point: 2000°CMelting Point: 1062°C
Metallic Character: trend decreasing from left to right
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Mercury
Noble Gas Configuration: [Xe]6s25d10
State of Matter: LiquidBoiling Point: 356.6°CMelting Point: -38.9°C
Metallic Character: trend decreasing from left to right
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Thallium
Noble Gas Configuration: [Xe]6s25d106p1
State of Matter: SolidBoiling Point: 1473°CMelting Point: 304°C
Metallic Character: trend decreasing from left to right
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Lead
Noble Gas Configuration: [Xe]6s25d106p2
State of Matter: LeadBoiling point: 1755°CMelting Point: 327°C
Metallic Character: trend decreasing from left to right
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Bismuth
Noble Gas Configuration: [Xe]6s25d106p3
State of Matter: SolidBoiling Point: 1420°CMelting Point: 271°C
Metallic Character: trend decreasing from left to right
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Polonium
Noble Gas Configuration: [Xe]6s25d106p4
State of Matter: SolidBoiling Point: 962°CMelting Point: 254°C
Metallic Character: trend decreasing from left to right
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Astatine
Noble Gas Configuration: [Xe]6s25d106p5
State of Matter: SolidBoiling Point: 337°C (estimate)Melting Point: 302°C
Metallic Character: trend decreasing from left to right