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Periodic Table

Periodic Table. Trends and Similarities. Trends of the Periodic Table: At the conclusion of our time together, you should be able to:.

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Periodic Table

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  1. Periodic Table Trends and Similarities

  2. Trends of the Periodic Table:At the conclusion of our time together, you should be able to: Give a trend across and down the Periodic Table for metallic characteristics, reactivity, atomic radius and ion radius, electron affinity, ionization energy, electronegativity, density, melting point and boiling point Pick the element with the higher trend above from a list of several elements

  3. Trends In The Periodic Table: Ionization EnergyAtomic RadiusElectron AffinityElectronegativity, Etc.

  4. Periodic Trends Try to determine the trends by looking at the handouts provided.

  5. Metallic Characteristic Trends Conductivity Shininess Malleability Ductility

  6. Reactivity Of Metals more reactive more reactive

  7. Reactivity Trends

  8. Atomic Radius ½ the distance between the nuclei of two identical atoms that are bonded together. • Energy level, n, as they go higher = larger • Proton – electron attraction = smaller

  9. Atomic Radius Vs. Atomic Number

  10. Atomic Radius Trends

  11. Periodic Table Trends Answers

  12. Atomic Radius Trends

  13. Ionic Radius • Cations lose electrons, therefore they tend to be Positive Ions - Metals • Anions gain electrons, therefore they tend to be Negative Ions - Nonmetals

  14. Ionic Radius Trends Electron – electron repulsion = Larger

  15. Ionic Radius Trends

  16. Electron Affinity The energy change that occurs when a neutral atom acquires an electron. Most electron affinity values are negative. Energy is released from the atom. Atoms that really want another electron tend to be more negative.

  17. Periodic Table Trends Answers

  18. Electron Affinity Trends

  19. Ionization Energy The energy required to remove one electron from a neutral atom. The closer to the nucleus, the harder to pull the electron. The farther away, more interference from other electrons, therefore, the easier it is to pull the electron.

  20. Ionization Energy Vs. Atomic Number

  21. Ionization Energy Trends

  22. Ionization Energy Trends

  23. Electronegativity A measurement of the ability of an atom in a chemical compound to attract electrons.

  24. Generally, • Ionization energy + Electron Affinity = Electronegativity • Most electronegative element – Fluorine (F) • It is assigned the number 4 • All other values are based on this value.

  25. Electronegativity Trends

  26. Electronegativity Trends

  27. Density Mass of a Material Divided by Volume of that Material

  28. Density Trends

  29. Density Trends

  30. Boiling Point Temperature at which a system moves from the liquid state to the gaseous state. The external pressure pushing into the liquid is equal to the internal pressure pushing out of the liquid.

  31. Melting Point The temperature at which a solid becomes a liquid. The external pressure pushing into the solid is equal to the internal pressure pushing out of the solid.

  32. Boiling Point Trends

  33. Boiling/Melting Point Trends

  34. Trends of the Periodic Table:Let’s see if you can: Give a trend across and down the Periodic Table for metallic characteristics, reactivity, atomic radius and ion radius, electron affinity, ionization energy, electronegativity, density, melting point and boiling point Pick the element with the higher trend above from a list of several elements

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