Bonding

Question 1

what are the electrostatic periodic trends

Answer 1

down group - smaller attraction

Question 2

explain metalllic bonding

Answer 2

the electrostatic attraction of the positive metal ions (cations) and delocalised electrons forming a lattice structure

Question 3

what are metallic bondings 4 properties

Answer 3

high melting point
good heat/electricity conductors
ductile/malleable
hardness

Question 4

explain why metallic bonds have high melt point

Answer 4

the bonds are strong and increase with the groups, and more heat energy is required to break

Question 5

explain why metallic bonds are good heat and electricty conductors

Answer 5

due to mobile delocalised electrons
when electricity is inserted the electrons repulse which carries charge to other side
when heat is conducted the neg/pos ions get excited and collide but delocalised e- can float through to transfer heat

Question 6

explain why metallic bonds are ductile and malleable (form any shape and stay intact)

Answer 6

Metallic Bonding is non directional.

with force one layer can slip/slide without disrupting metallic bond - attraction is till there and lattice still exists

Question 7

explain why metallic bonds are hard

Answer 7

greater number of valence electrons and larger positive charge in lattice

Question 8

what are the three things the strength of metallic bonds rely on

Answer 8

1. number of electrons
2. size of positive ions
3. the way they are packed

Question 9

what are 3 examples of metallic bonds

Answer 9

iron, mg and copper

Question 10

order each type of bond from strong to weak

Answer 10

metallic
ionic
colvant network
covalent molecule