3.1.3 Bonding

Question 1

ionic bond

Answer 1

electrostatic attraction between positive and negative ions

electronegativity >2.1

Question 2

metallic bond

Answer 2

electrostatic attraction between positive metal ion lattice and delocalized electrons
(electronegativity <1.6)

Question 3

factors affecting strength of mettalic bond

Answer 3

• nuclear attraction
• number of delocalised electrons per atom
• size of ion

Question 4

covalant bond

Answer 4

electrostatic attraction between positive nucleus and negative pair of shared electrons

Question 5

dative covalant bonds

Answer 5

pair of electrons shared between 2 atoms
where one atom provides both electrons
e.g. NH4+, All4-

Question 6

electronegativity and factors affecting it

Answer 6

the ability of an atom to attract a pair on electrons within a covalant bond

• smaller atomic radius, attracts electrons
• greater nuclear attraction, attracts electrons

Question 7

non polar covalant

Answer 7

electrons are shared/spaced equaly between all atoms

Question 8

2bp, 0lp (BeCl2)

Answer 8

linear 90

Question 9

3bp, 0lp

Answer 9

triginal planar 120

Question 10

4bp, 0lp

Answer 10

tetrahedral 109.5

Question 11

5bp, 0lp

Answer 11

triganal bypyramid 90 120

Question 12

6bp, 0lb

Answer 12

octohydral 90

Question 13

2bp, 1lp

Answer 13

bent 118

Question 14

3bp, 1lp

Answer 14

triginal pyramidal 107

Question 15

2bp, 2lp

Answer 15

bent 105.5

Question 16

4bp, 1lp

Answer 16

sawhorse 87.5 and 117.5

Question 17

3bp, 2lp

Answer 17

t-shaped 90

Question 18

2bp, 3lp

Answer 18

linear 180

Question 19

5bp, 1lp

Answer 19

square pyramid 90

Question 20

4bp, 2lp

Answer 20

square planer 90

Question 21

3bp, 3lp

Answer 21

t-shaped 90

Question 22

2bp, 4lp

Answer 22

linear 90