Did you see my note from last night? Here is a link. I would like some answers please.
http://www.jiskha.com/display.cgi?id=1418364644
A sodium atom when excited gives off two very specific wavelengths of visible light. What does this tell us about sodium?
A. There are two principal electron transitions in sodium.
B. There are two electrons in a sodium atom.
C. A sodium atom has its electrons in two energy levels.
D. A sodium atom has two valence electrons.
I was think a or c.
8 answers
I answered those questions
You answered one question but not the others. Please fill me in on the others.
I answered all your questions what do you think about this one. I crossed off b and d because sodium has only one election. Am I correct with that statement.
OK, so I'll repeat some of them.
What do you have as resource material for study? Is the material explained thoroughly?
Where do these questions come from? Are they test questions?
What do you have as resource material for study? Is the material explained thoroughly?
Where do these questions come from? Are they test questions?
Thanks!. One more. Are these questions you post test questions?
I'm working on the answer to the Na question.
I'm working on the answer to the Na question.
As for the Na question.
I've not made a secret that I think some of the questions are not very good, some of the answers are not very good, but mostly, as this one, there is no clear answer or the answers are muddled. At any rate, here is my take on this one.
A is true. The two bright Na lines, one at 5490.0 A and 5495.9 A arise from the following transitions:
2P3/2 -->2S1/2 the 5890.0A line.
2P1/2 -->2S1/2 the 5895.9 A
B is true. Na has 11 electrons so of course it has 2. In fact any number from 1 to 12 would be true here. I know what it means but what it says is the way these questions must be answered. This is what I call a muddled answer.
C is true. I showed the two energy levels in the answer to A above.
D is not true.
So you have answer choices of A, B, C. Both of us know B is not the intended answer (although I still contend it is a true statement) so the choices are between A and C. Both are true. Take your pick. If you want my opinion, I'm inclined to think C is a play on words. Although it is true, I would go with A as my choice. Good luck.
I've not made a secret that I think some of the questions are not very good, some of the answers are not very good, but mostly, as this one, there is no clear answer or the answers are muddled. At any rate, here is my take on this one.
A is true. The two bright Na lines, one at 5490.0 A and 5495.9 A arise from the following transitions:
2P3/2 -->2S1/2 the 5890.0A line.
2P1/2 -->2S1/2 the 5895.9 A
B is true. Na has 11 electrons so of course it has 2. In fact any number from 1 to 12 would be true here. I know what it means but what it says is the way these questions must be answered. This is what I call a muddled answer.
C is true. I showed the two energy levels in the answer to A above.
D is not true.
So you have answer choices of A, B, C. Both of us know B is not the intended answer (although I still contend it is a true statement) so the choices are between A and C. Both are true. Take your pick. If you want my opinion, I'm inclined to think C is a play on words. Although it is true, I would go with A as my choice. Good luck.
it’s A
2 answers