covalent covalent OR [Al]+3[ [ S ]-2 S ]-2 [Al]+3[ S ]-2 34. Fill in the following chart, which compares characteristics of both ionic and covalent bonding. Defining Characteristic Ionic Covalent (Molecular) Type of involved? Metal & Nonmetal 2 Nonmetals Describe how the valence They are transferred from metal They are shared electrons are interacting in the (loses) to nonmetal (gains) bond Does it have electrical No No conductivity as a solid? Does it have electrical Yes! The more ions there are in No conductivity when/if dissolved in the chemical formula, the more water? conductive it is! At STP, tend to be… Brittle Solids? Brittle Solids Tend not to be a solid at STP Tend not to be a solid at STP? Relative melting/boiling point temperature: High or Low? High MP/BP Low MP/BP Particle attractions are: Stronger or Weaker? Stronger Weaker draw the Lewis structures First, draw the Lewis structures Describe how you would draw for the atoms involved prior to for the atoms involved prior to Lewis Structures. (Feel free to bonding. Then draw arrows to bonding. Then draw loops draw an example!) show how e- are transferred. around unpaired electrons to Rewrite these atoms as ions with show how e- are shared. Rewrite brackets and charges (no these atoms showing the correct electrons around metals, 8 number of electrons shared electrons around nonmetals). between them, remember that one line= 2 electrons. Check your answer to make sure you have 8 electrons around each atom. (Hydrogen will only have 2 e-) NO NAME NECESSARY!! Name the cation first. If it is a Describe how you would name transition metal, use a roman one of these compounds. numeral to indicate the correct
covalent covalent OR [ S ]-2 [Al]+3[ S ]-2 [Al]+3[ S ]-2 34. Fill in the following chart, which compares characteristics of both ionic and covalent bonding. Defining Characteristic Ionic Covalent (Molecular) Type of involved? Metal & Nonmetal 2 Nonmetals Describe how the valence electrons are interacting in the bond They are transferred from metal (loses) to nonmetal (gains) They are shared Does it have electrical conductivity as a solid? No No Does it have electrical conductivity when/if dissolved in water? Yes! The more ions there are in the chemical formula, the more conductive it is! No At STP, tend to be… Brittle Solids? Tend not to be a solid at STP? Brittle Solids Tend not to be a solid at STP Relative melting/boiling point temperature: High or Low? High MP/BP Low MP/BP Particle attractions are: Stronger or Weaker? Stronger Weaker Describe how you would draw Lewis Structures. (Feel free to draw an example!) draw the Lewis structures for the atoms involved prior to bonding. Then draw arrows to show how e- are transferred. Rewrite these atoms as ions with brackets and charges (no electrons around metals, 8 electrons around nonmetals). First, draw the Lewis structures for the atoms involved prior to bonding. Then draw loops around unpaired electrons to show how e- are shared. Rewrite these atoms showing the correct number of electrons shared between them, remember that one line= 2 electrons. Check your answer to make sure you have 8 electrons around each atom. (Hydrogen will only have 2 e-) Describe how you would name one of these compounds. Name the cation first. If it is a transition metal, use a roman numeral to indicate the correct NO NAME NECESSARY!!