Bonding Flashcards
Define ionic bonding
Ionic bonding involves electrostatic attraction between oppositely charged ions in a lattice
What is the compound formula for sulfate?
SO4^2-
What is the compound formula for sulfate?
SO4^2-
What is the formula for hydroxide ?
OH-
What is the formula for carbonate ?
CO3^2-
What is the formula for ammonium?
NH+4
Define covalent bonding
A single covalent bond contains a shared pair of electrons
Held by electrostatic attraction
What do multiple bonds contain ?
Multiple bonds contain multiple pairs of electrons
Define a coordinate /dative covalent bond
Contains a shared pair of electrons with both electrons supplied by one atom
What happens in a coordinate covalent bond ?
-atom accepts the electron pair is an atom that doesn’t have a filled outer main level of electrons-atom is electron deficient
-the atom is donating the electrons has a pair of electrons that is not being used in a bond called a lone pair
What are the similarities with an ordinary covalent bond and coordinate bonds?
Coordinate bonds have exactly the same strength and length as ordinary covalent bonds between the same pair of atoms
Define metallic bonding
Metallic bonding involves attraction between delocalised electrons and positive ions arranged in a lattice
What does the number of delocalised electrons depend on ?
Number of delocalised electrons depends on how many electrons have been lost by each metal atom
What are the properties of metals?
Good conductors of electricity
Good conductors of heat
Malleable
Ductile
High mpg and bpt
Why are metals good conductors of electricity?
Delocalised electrons move freely throughout the structure enabling current to flow
