bonding

Question 1

ionic bonding

Answer 1

strong electrostatic force of attraction between oppositely charged ions

Question 2

ionic radii trends

Answer 2

increases down the group
decreases across period

Question 3

properties of ionic compounds

Answer 3

-high mp
-non conductor of electricity when solid but is when aqeuous or molten
-brittle

Question 4

covalent bonding

Answer 4

electrostatic attraction between the bonding shared pair of electrons and the 2 nuclei

Question 5

Effect of multiple bonds on bond strength and length

Answer 5

more bonds= shorter bond length and greater bond strength

Question 6

Dative covalent vond

Answer 6

electrostatic forces of attraction between the shared pair of electrons and the 2 nuclei where the shared pair of electrons come from only one of the bonding atoms

Question 7

electronegativity

Answer 7

relative tendancy of an atom in a covalent bond in a molecule to attract electrons in a covalent bond to itself

Question 8

factors affecting electronegativity

Answer 8

• nuclear charge
• shielding
• atomic radii

Question 9

polar molecule

Answer 9

net dipole moment and usually dissolves in polar solvents

Question 10

non-polar molecule

Answer 10

no net dipole moment and does not dissolve in non polar solvents

Question 11

polar

Answer 11

uneven distribution of charge in a molecule

Question 12

symmetrical shapes

Answer 12

linear
triganol planar
tetrahedral
triganol bypyramidal
octahedral

Question 13

assymetrical shapes

Answer 13

v shaped
triganol pyramidal

Question 14

metallic bond

Answer 14

strong electrostatic force of attraction between the cations and the sea of delocalised electrons

Question 15

factors that effect strength of metallic bond

Answer 15

1.number of protons
2.number of delocalised electrons per atom
3. size of ion

Question 16

bond length

Answer 16

distance between the centre of each nuclei to each other