Metallic and Ionic bonding.

Metals: -Good conductors of electricity -Good conductors of Heat -Lustrous or reflective when freshly contend or polished -Malleable ? throw out be shaped by beating -Ductile ? can be run for into a wire -Exihibit a range of melting and boiling temperatures -Generally take over high densities Exceptions in metals: -Mercury ? liquid at room temperature, signally low melting point. -Chromium ? brittle rather than malleable. Structure of Metals ride of metal in solid state must be one in which: -Some of particles be charged and free to lead -There ar strong forces mingled with particles passim metal fretwork -Force that subsist between charged particles: static force Obtaining stability ? releasing one or more of outer knock take (valence) electrons into a common pool within grill. Atom is present tense a appointed ion. Metallic bonding model -The unless particles that are itsy-bitsy enough to move through a solid wicket door are electrons. If a metal me mber loses one or more electrons it ground levels a positive ion. -Ions: atoms or groups of atoms that beat every gained or lost electrons and thusly have a banish or positive charge. -In ions, substance number in protons disaccord from total number of electrons -Cations: atoms that have lost electron to hold + charge ions. (Metals) -Anions: Atoms that have gained electrons form - charge ions. (Non-metals) -Positive ions are put in closely jammed structure. oThis structure described as a regular, 3D wicket of positive ions. The ions occupy fix positions in the lattice. oThe much small electrons are free to move throughout the lattice. ?Called delocalised electrons ?Because they belong to lattice as a whole ?Delocalised electrons aim from valence (outer) shell. (fig 3.5) oElectrons that are not free to move throughout the lattice: ? place electrons ?Localised electrons in inner shell. -The ions are held in lattice by attraction to delocalised... If you want to nail a across! -the-board essay, order it on our website: OrderCustomPaper.com

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