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COVALENT BONDS

COVALENT BONDS. Form between atoms that are non-metals or between molecules . Form because the outer electron rings are not full. (The atoms are NOT stable.) Form by sharing valence e- . COVALENT BONDS. Example: Water – H 2 O. COVALENT BONDS.

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COVALENT BONDS

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  1. COVALENT BONDS • Form between atoms that are non-metals or between molecules. • Form because the outer electron rings are not full. (The atoms are NOT stable.) • Form by sharing valence e-.

  2. COVALENT BONDS Example: Water – H2O

  3. COVALENT BONDS To figure out if H is behaving like a metal or a non-metal: HCl NH3 If written 1st If written after a (group 1) non-metal (group 17) H is a metal. H is a non-metal.

  4. COVALENT BONDS • The reason H2O is covalent: Remember H can be a metal or a non-metal!!! (See my periodic table) Here H is behaving like a non-metal.

  5. COVALENT BOND Properties • These are weak bonds. • Covalent compounds will have low melting and boiling points. • An example is H2O (water)

  6. Covalent vs. Ionic non-metals metal and nonmetal share val. e- transferring val. e- atoms ions w/ opposite charges weak bonds strong bonds low m.p. and b.p. high m.p. and b.p. Ex: H2O Ex: NaCl

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