Bonding Flashcards
Metallic bonding AO1 (define,structure,draw,properties)
-electrostatic attraction between positive metal ions and delocalised e-
-giant metallic structure
-conductive
-malleable and ductile
ionic bonding AO1 (define,structure,draw,properties)
-electrostatic attraction between oppositely charged ions
-giant ionic structure
-when solid: not conductive
-when molten:conductive
covalent bonding AO1 (define,structure,draw,properties)
-shared pair of e-
-macromolecular: covalent
-simple molecular:intermolecular attractions
-not conductive
define co-ordiant bonding
a covalent bond where both electrons in the shared pair have come from the same atom. Coordinate bonds are represented by an arrow
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rule of lone pair repulsion
-lone pairs repel more than bonding pairs
-reduces bonding angle by 2.5 for each lone pair
name and angle of 2 BP
-linear
-180
name and angle of 3 BP
-trigonal planar
-120
name and angle of 4 BP
-tetrahedral
-109.5
name and angle of 5 BP
-trigonal bipyramidal
-120 AND 90
name and angle of 6 BP
-octahedral
-90
name and angle of 2 BP 1 LP
-v-shaped
-117.5
name and angle of 2 BP and 2 LP
-v-shaped
-104.5
name and angle of 3 BP and 1 LP
-v-shaped
-107
name and angle of 3 BP and 2 LP
-T-shaped
-89
name and angle of 4 BP and 1 LP
-see saw
-119
-89
name and angle of 5 BP and 1 LP
-square pyramidal
-89
name and angle of 4 BP and 2 LP
-square planar
-90
define electronegativity
The ability of an atom to attract electron density in a covalent bond
types of intermolecular attractions
-induced dipole-dipole attractions
-permanent dipole-dipole attractions
-Hydrogen bonding
how do vanderwaal interactions occur
-random movement of electrons in one molecule results in an uneven distribution of electrons
-creates a temporary dipole in one molecule
-this induces a dipole in a neighbouring molecule
-attraction between positive and negative dipoles
