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.
it’s A
I answered those questions
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.
To determine the correct answer, let's break down the information given in the statement and analyze the options.
According to the statement, a sodium atom, when excited, emits two specific wavelengths of visible light. This phenomenon is known as atomic emission.
Now, let's go through each option and see which one best aligns with the given information:
A. There are two principal electron transitions in sodium.
This option suggests that sodium has two principal electron transitions. Electron transitions occur when electrons in an atom move from one energy level to another. If a sodium atom emits two specific wavelengths of light, it indicates that there are indeed two principal electron transitions taking place. Therefore, option A is a possible answer.
B. There are two electrons in a sodium atom.
This option suggests that sodium has only two electrons. However, the presence of two specific wavelengths of light emitted by sodium does not directly indicate the number of electrons in the atom. So, option B is not a valid answer based on the given information.
C. A sodium atom has its electrons in two energy levels.
This option suggests that sodium atoms have their electrons distributed across two energy levels. If a sodium atom emits two specific wavelengths of light, it implies that there are different energy transitions happening within the atom's electron configuration. This aligns with the idea that electrons are distributed in two energy levels. Therefore, option C is also a plausible answer.
D. A sodium atom has two valence electrons.
This option implies that sodium atoms possess two valence electrons. Valence electrons are the electrons present in the outermost energy level of an atom. However, the emission of two specific wavelengths of light does not directly indicate the number of valence electrons in a sodium atom. Therefore, option D is not the most accurate answer based on the given information.
Based on our analysis, options A and C appear to be the most suitable answers. However, to determine the correct answer definitively, we need to consider further information about sodium's electron configuration and energy levels.
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
Thanks!. One more. Are these questions you post test questions?
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.
You answered one question but not the others. Please fill me in on the others.
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?