- Joined
- Feb 7, 2011
- Messages
- 1,145
- Reaction score
- 220
Q45: Barium is an alkaline earth metal with the atomic number 56. Which set of quantum numbers may be written for a valence electron for barium
I narrowed it down to answer choices B (n=6, l=0, ml=0, ms=-1/2) and D (n=6, l=2, ml=2, ms=+1/2). In the solutions, the correct choice is B. I am not sure why D can't be the answer, since ml can be from -l...+l?? this satisfies both B and D...
Q50: Which statement is false? a) Kr has a lower average speed than Ne at the same temperature b) the molecules of a gas undergo many collisions with each other and with the walls of the container c) deviations from the ideal gas law are greater at low temperatures and high pressures d) all molecules of an ideal gas have the same kinetic energy at constant temperature e) all are true
The correct answer is D. I thought all statements are true? I looked over Chad's notes and I thought that the average KE of Oxygen, for example, would equal the average KE of hydrogen...can someone clarify this for me? Why the destroyer says that the molecules wouldn't have the same kinetic energy at constant temperature? I thought the speed/velocity would differ depending on the weight of an atom, but not the kinetic energy.
Thanks.
I narrowed it down to answer choices B (n=6, l=0, ml=0, ms=-1/2) and D (n=6, l=2, ml=2, ms=+1/2). In the solutions, the correct choice is B. I am not sure why D can't be the answer, since ml can be from -l...+l?? this satisfies both B and D...
Q50: Which statement is false? a) Kr has a lower average speed than Ne at the same temperature b) the molecules of a gas undergo many collisions with each other and with the walls of the container c) deviations from the ideal gas law are greater at low temperatures and high pressures d) all molecules of an ideal gas have the same kinetic energy at constant temperature e) all are true
The correct answer is D. I thought all statements are true? I looked over Chad's notes and I thought that the average KE of Oxygen, for example, would equal the average KE of hydrogen...can someone clarify this for me? Why the destroyer says that the molecules wouldn't have the same kinetic energy at constant temperature? I thought the speed/velocity would differ depending on the weight of an atom, but not the kinetic energy.
Thanks.