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Elements and the Periodic Table

Elements and the Periodic Table. 1.1 Metallic Elements. LO: I understand what holds the atoms together in a metallic lattice. The Metallic Lattice. Negative outer electron(s). +. A positive ion (nucleus and inner electrons). A lattice is. a regular repeating pattern.

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Elements and the Periodic Table

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  1. Elements and the Periodic Table

  2. 1.1 Metallic Elements LO: I understand what holds the atoms together in a metallic lattice. The Metallic Lattice

  3. Negative outer electron(s) + A positive ion (nucleus and inner electrons) A lattice is . a regular repeating pattern Each metal atom is made up of: LO: I understand what holds the atoms together in a metallic lattice. The outer electrons are to any one atom. not fixed delocalised They are said to be and can move from atom to atom.

  4. + + + This electron is attracted to all three nuclei The outer electrons of one metal atom are attracted to the nuclei of all the atoms. surrounding LO: I understand what holds the atoms together in a metallic lattice. electrostatic A metallic bond is the attraction between the negative delocalised electrons and the surrounding positive . outer ions

  5. Physical Properties of Metals LO: I understand how some properties of metals relate to the metallic bonds.

  6. Electrical Conductivity Metals are able to conduct electricity as the outer electrons are and can move from one end of the metallic lattice to the other. delocalised Malleable (ability to be rolled into sheets) Ductile (ability to be stretched out into wires) The forces holding the metallic lattice together act equally in directions. all This means that the metal atoms can move and slip past each other without the metallic bond. breaking LO: I understand how properties of metals relate to the metallic bonds.

  7. Li Boiling Point (˚C) Na K Rb Cs Period number Boiling point Boiling point trend down group 1: decreases The boiling point down the group. further away The outer electrons are from the nucleus and so are not held as tightly. The strength of the metallic bond . decreases LO: I understand how properties of metals relate to the metallic bonds.

  8. Ga Boiling Point (˚C) Ca K Group Number Boiling point trend across a period 4: increases The boiling point of the metals from left to right. The number of outer electrons is . increasing increases As the number of outer electrons , the strength of the metallic bond increases. LO: I understand how properties of metals relate to the metallic bonds.

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