Bonding

Question 1

Metallic bonding AO1 (define,structure,draw,properties)

Answer 1

-electrostatic attraction between positive metal ions and delocalised e-
-giant metallic structure
-conductive
-malleable and ductile

Question 2

ionic bonding AO1 (define,structure,draw,properties)

Answer 2

-electrostatic attraction between oppositely charged ions
-giant ionic structure
-when solid: not conductive
-when molten:conductive

Question 3

covalent bonding AO1 (define,structure,draw,properties)

Answer 3

-shared pair of e-
-macromolecular: covalent
-simple molecular:intermolecular attractions
-not conductive

Question 4

define co-ordiant bonding

Answer 4

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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Question 5

rule of lone pair repulsion

Answer 5

-lone pairs repel more than bonding pairs
-reduces bonding angle by 2.5 for each lone pair

Question 6

name and angle of 2 BP

Answer 6

-linear
-180

Question 7

name and angle of 3 BP

Answer 7

-trigonal planar
-120

Question 8

name and angle of 4 BP

Answer 8

-tetrahedral
-109.5

Question 9

name and angle of 5 BP

Answer 9

-trigonal bipyramidal
-120 AND 90

Question 10

name and angle of 6 BP

Answer 10

-octahedral
-90

Question 11

name and angle of 2 BP 1 LP

Answer 11

-v-shaped
-117.5

Question 12

name and angle of 2 BP and 2 LP

Answer 12

-v-shaped
-104.5

Question 13

name and angle of 3 BP and 1 LP

Answer 13

-v-shaped
-107

Question 14

name and angle of 3 BP and 2 LP

Answer 14

-T-shaped
-89

Question 15

name and angle of 4 BP and 1 LP

Answer 15

-see saw
-119
-89

Question 16

name and angle of 5 BP and 1 LP

Answer 16

-square pyramidal
-89

Question 17

name and angle of 4 BP and 2 LP

Answer 17

-square planar
-90

Question 18

define electronegativity

Answer 18

The ability of an atom to attract electron density in a covalent bond

Question 19

types of intermolecular attractions

Answer 19

-induced dipole-dipole attractions
-permanent dipole-dipole attractions
-Hydrogen bonding

Question 20

how do vanderwaal interactions occur

Answer 20

-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