bonding

Question 1

covalent

Answer 1

shared electrons

Question 2

strength of covalent bond

Answer 2

energy required to break molecules into constituent atoms

Question 3

single covalent bond energy

Answer 3

150-350

Question 4

double c. bond energy

Answer 4

greater

Question 5

Ionic bonding

Answer 5

regular array of cations and anions via electrostatic interactions

Question 6

repulsion

Answer 6

the attractive interaction between the ions overide the repulsion force of alike ions.

Question 7

in covalent bonds the

Answer 7

electrostative interactions are not directional

Question 8

strength of ionic bond

Answer 8

it is calculated by taking solid ionic and separating them into infinity. (lattice energy)

Question 9

metallic bonding

Answer 9

cations held together by a sea of electron

Question 10

dispersion interaction

Answer 10

electron density fluctuates over time. it may become unsymetrical creating partial charges. it geneates electron density to change in other molecules as if it is slightly positive, the electron density changes. etc

Question 11

the larger the induce dipole

Answer 11

the stronger the interaction

Question 12

the size of the dipole depends on

Answer 12

how much a given electric field will be disorted by the electron distribution

Question 13

the more polarizable

Answer 13

the greater the induced dipole

Question 14

if the bonds are strong the polarisation is

Answer 14

low

Question 15

covalent bonds are

Answer 15

directional

Question 16

covalent character in ions

Answer 16

t arguments can be refined using Fajan’s Rules.
Ostensibly they give an empirical measure of polarisability, which
is a measure of how easily an electron cloud is distorted by an
electric field
It weighs up 2 factors:
1. Size of the ion: Smaller cation, and larger anion, give greater covalent character.
2. The charge of cation: Greater the charge of cation, greater is the covalent character of the bond.
Some versions of Fajans Rules quot