periodicity

Question 1

bonding and structure

Answer 1

Na,Mg,Al metallic bonding, giant metallic structure
Si covalent bonding, macromolecular structure
P, S, Cl covalent bonding, simple molecular structure
Ar monoatomic bonding, simple molecular structure

Question 2

ionisation energy down a group

Answer 2

decreases
electrons further from nucleus, more shielding
weaker attraction between outer e- and nucleus, less energy required

Question 3

ionisation energy across period 3

Answer 3

increases because there’s constant shielding and more protons across the period which decreases the radius and makes it harder to lose and electron

Question 4

ionisation energy deviations

Answer 4

aluminium and sulfur

Question 5

aluminium deviation

Answer 5

outer e- is in the higher energy p sub-shell so less energy is needed to remove an electron than Mg in a sub shell

Question 6

deviation at S

Answer 6

outer e- filled up a p orbital so there is more repulsion so it’s easier to remove an electron than

Question 7

melting point and boiling point graph

Answer 7

Question 8

trend in mp and bp in metals

Answer 8

increase, charger and number of delocalised electrons increases, size of ion decreases. Stronger metallic bond

Question 9

Trend in mp and bp simple molecular

Answer 9

Question 10

size of VDW depends on

Answer 10

atomic radius and surface area

Question 11

strength of metallic bonds depends on

Answer 11

charge, ionic radius, number of delocalised electrons increases

Question 12

periodicity

Answer 12

repeating trends of physical and chemical properties across a period

Question 13

metalloids

Answer 13

combination of metal and non metal properties