Charge Clouds Flashcards
1
Q
What do shapes of molecules depend on? (2 marks)
A
⦾ No. of e- pairs in outer shell (1)
⦾ Of central atom (1)
2
Q
What are bonding pairs of electrons? (1 mark)
A
⦾ Shared pairs of e- (1)
3
Q
What are lone pairs of electrons (1 mark)
A
⦾ Unshared pairs of e- (1)
4
Q
What is a charge cloud? (2 marks)
A
⦾ Area with big chance of finding e-s (1)
⦾ What bonding + lone e- pairs exist as (1)
pg. 77
5
Q
Explain ‘Valence Shell Electron Pair Repulsion Theory’?
2 marks
A
⦾ e- are -vely charged (1)
⦾ (So) charge clouds repel each other until far apart as possible (1)
6
Q
Place in order from smallest to biggest (in terms of bond angles):
⦾ Lone/Bonding
⦾ Bonding/Bonding
⦾ Lone/Lone
(3 marks)
A
Smallest:
⦾ Bonding/Bonding (1)
⦾ Bonding/Lone (1)
⦾ Lone/Lone (1)
Biggest:
