These questions have been provided on a CC-BY basis to facilitate peer instruction.

1. The Group 14 flip

2. Why share questions?
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lecturing.
• These questions have been
provided on a CC-BY basis to
facilitate peer instruction.

3. Why is the diamond structure found in
multiple group 14 element allotropes
but multiply bonded structures are
exclusive to carbon?
A. Lone pair repulsion
disfavours multiple bonds
and larger atoms disfavour
pi bonding
B. Lone pair repulsion
disfavours multiple bonds
and the diamond structure
results from four equivalent
covalent bonds
C. The inert pair effect means
that two electrons do not
engage in bonding and the
diamond structure results
from two equivalent covalent
bonds
D. Larger atoms disfavour pi
bonding and the diamond
structure results from four
equivalent covalent bonds
Lone
pairrepulsion
disfa...
Lone
pairrepulsion
disfa...
Theinertpaireffectm
ea..
Largeratom
sdisfavourp...
4
3
4
3

4. Which has the lowest boiling
point?
A. α-quartz
B. silicon
C. silicon
tetrachloride
D. blue asbestos

5. What sort of gloves do you use to
handle organotin compounds?
A. None
B. Disposable
nitrile
C. Double-dip
natural rubber
(Marigolds)
D. Woollen NoneDisposable
nitrile
Double-dip
naturalrubbe...
W
oollen
0 000

6. Why does the stability of MCl4
decrease as you go down group 14?
A. 3rd ionisation
energy increases
B. 3rd ionisation
energy decreases
C. Increased size of
p orbitals
D. Decreased size of
p orbitals 3rd
ionisation
energyinc...
3rd
ionisation
energyde...
Increased
size
ofp
orbitals
Decreased
sizeofp
orbitals
0% 0%0%0%