Electrons and bonding

Question 1

Define electronegativity

Answer 1

Ability to attract bonded electron in covalent bond

Question 2

Greater difference=

Answer 2

ionic

Question 3

Whats the electron pair repulsion theory?

Answer 3

Electrons repel one another as far as possible
Shape depends on electron pairs
L-L>L-D>D-D

Question 4

Shapes

Answer 4

Trig planar-180
Tetra - 109.5
Trig bipyradmidal - 90 and 120
Octa - 120
Pyramidal - 107
Angular - 104.5

Question 5

Define polar bond

Answer 5

Covalent bond between two atoms with different electronegativites in which bonded electron pair is drawn closer to more electronegative atom

Question 6

Which shapes cancel dipoles out?

Answer 6

Trig planar, tetra, tri by, octa

Question 7

Define permanent d-d

Answer 7

Between polar molecules

Question 8

Define induced d-d

Answer 8

Weakest and in all

Question 9

How is induced d-d formed?

Answer 9

Movement of electron= instanstaneous dipole which induces another dipole in neighbouring atom
attraction between temporary induced dipoles = dipole -dipole

Question 10

Define H bond

Answer 10

Bonded to lone pair on N, F and O

highest

Question 11

Water

Answer 11

Ice is less dense due to open lattic

high MP