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

1. The Group 16 flip

2. Why share questions?
• There are many excellent open
educational resources on the
internet.
• These include many videos of
more-or-less traditional university
lecturing.
• These questions have been
provided on a CC-BY basis to
facilitate peer instruction.

3. What property of dioxygen
explains its magnetic behaviour?
A. Number of
electrons
B. Unpaired
electrons
C. Reduction
potential
D. Volatility
Num
berofelectronsUnpaired
electrons
Reduction
potential
Volatility
0% 0%0%0%

4. What is responsible for the
conductivity of sulfuric acid?
A. Trace lead
contamination
B. Excess protons
C. Solvated
electrons
D. Self ionization Trace
lead
contam
ination
ExcessprotonsSolvated
electrons
Selfionization
0% 0%0%0%

5. Which is the strongest acid?
A. Phosphoric acid
B. Sulfuric acid
C. Phosphorus acid
D. Boric acid
Phosphoricacid
Sulfuricacid
Phosphorusacid
Boricacid
0 000

6. What explains these relative
thermal stabilities:
H2S > H2Se > H2Te
A. The inert pair
effect.
B. Hydrogen
bonding
C. Effective nuclear
charge
D. Effective orbital
overlap
Theinertpaireffect.Hydrogen
bonding
Effectivenuclearcharge
Effectiveorbitaloverlap
0 000