Thank you, DrClaude
From what you say,
"A system can be at a constant temperature because it is isolated, or because it is in contact with a reservoir that is at a constant temperature."
You mean that the case of constant temperature and the case of heating up an atom are not the same and...
Thank you Blue_leaf77 and Dr Claude.
I am sure I need to research more on this topic as there are so many terms I have never seen before (such as hyperfine states,...).
Could I have one last question ? It's very close to the topic's question.
According to what I understand and learn after the...
Hi Dr Claude,
Could I sum up what I understand from you ?
=> The energy level in electron shells and the energy level in my case are basically the same, but not the same cause ?
In terms of the hyperfine states, I mean when an atom change from one hyperfine states to another. Does it mean it...
Hi everyone, sorry for the confusion. My problem is from this statement
"The second is the duration of 9 192 631 770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom.
It follows that the hyperfine splitting in...
I am currently studying a Foundation Program, which includes chemistry.
-I can easily understand the distinguishable characteristics between ground and excited state via writing the electron configuration.
-But how can an tom changes from ground to excited state ? And can an atom changes from...
Hello guy, I have questions with the use of the terms "net charge"
As far as I know we use net charge when we want to make a sum of positive charge + negative charge
For example the net charge of Na+ = +11+(-10)= +1
the net charge of Cl- = _______ = -1
But can we use...
Teacher. There's one more thing I would like to ask. I see there are many formula using "charge density". Is charge density able to be negative !?
If a charge density can be negative, it is very much easy to express its direction. I didn't find any vector form E that use the unit vector to...
Oh my god. I've just realized without the absolute symbols. It would be more easier to express the direction. Oh my oh my thank you very much teacher :)