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Chemical Bonding

Chemical Bonding. Is an electrostatic force of attraction between atoms that holds them together. It is the exposed electrons in the outermost shell that are the ones most responsible for an atoms chemical properties, including its bonds with other atoms. Covalent Bond.

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Chemical Bonding

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  1. Chemical Bonding • Is an electrostatic force of attraction between atoms that holds them together. • It is the exposed electrons in the outermost shell that are the ones most responsible for an atoms chemical properties, including its bonds with other atoms.

  2. Covalent Bond • An electrical attraction in which atoms are held together by their mutual attraction for shared electrons.

  3. Ions • Any atom having a net electric charge is an ion. • When an atom either loses or gains electrons it is called an ion. • If electrons are lost, protons outnumber electrons and the ion’s net charge is positive. • If electrons are gained, electrons outnumber protons and ion’s net charge is negative.

  4. Metals • The outer electrons of most metals tend to be weakly held to the nucleus. • These electrons are easily dislodged, leaving behind positively charged metal ions (M+) • The electrons that are dislodged flow freely through the metal ions.

  5. Metallic Bond • A “fluid” of electrons that hold the positively charged metal ions together. • The outer electrons(-) from the original metal atoms are free to move around between the positive metal ions formed (+).

  6. Metallic Bond • These free electrons are the 'electronic glue’ holding the particles together. • There is a strong electrical force of attraction between these free and mobile electrons (-) and the 'immobile' positive metal ions (+) and this is the metallic bond. • The mobility of electrons in a metal accounts for the metals ability to conduct electricity and heat.

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