How Do Term Symbols Apply to Magnesium's Ground State Configuration?

bman!!
Messages
26
Reaction score
0
Sodium, = 11, has the ground state configuration [Ne] 3s^1 and is a “one
electron” atom. Magnesium, Z= 12, is a “two-electron” atom. Write down its
ground state configuration and possible term values.

i think i get the right answer but I am having a couple of issues:

my answer:

ground state configuration: [Ne] 3s^2

possible term values are for the spin multiplicity either S = 1 or 0 so 2S+1 = 3 or 1

L = 0 therefore = 0

therefore J = 1 or 3

however I am inclined to go with J = 1 as i think the exclusion plays a role.

p.s. ill happily clarify anything here as i know its not the clearest, i just don't know how to wrie term/spectroscopic notation in latex/html

cheers

i just find this term symbol stuff abit cinfusing
 
Physics news on Phys.org
No, your J - value is wrong.

Tell me, what is the formula for adding two angular momentums in quantum mechanics. i.e What is the formula for J in this case?

This is the way to write a Term:

^{2S+1}L_J

Just click on this image to see the Tex-code, you should figure out how to chage the code to fit your needs-

Also, this is wrong:

"ground state configuration: [Ne] 3s^2"
We were discussing Mg right?
 
malawi_glenn said:
No, your J - value is wrong.

Tell me, what is the formula for adding two angular momentums in quantum mechanics. i.e What is the formula for J in this case?

This is the way to write a Term:

^{2S+1}L_J

Just click on this image to see the Tex-code, you should figure out how to chage the code to fit your needs-

Also, this is wrong:

"ground state configuration: [Ne] 3s^2"
We were discussing Mg right?


its ok i spoke to a chemist and he set me straight. besides, I've already had that exam, so i can set about forgetting everything i learned ;)
 
Hi, I had an exam and I completely messed up a problem. Especially one part which was necessary for the rest of the problem. Basically, I have a wormhole metric: $$(ds)^2 = -(dt)^2 + (dr)^2 + (r^2 + b^2)( (d\theta)^2 + sin^2 \theta (d\phi)^2 )$$ Where ##b=1## with an orbit only in the equatorial plane. We also know from the question that the orbit must satisfy this relationship: $$\varepsilon = \frac{1}{2} (\frac{dr}{d\tau})^2 + V_{eff}(r)$$ Ultimately, I was tasked to find the initial...
The value of H equals ## 10^{3}## in natural units, According to : https://en.wikipedia.org/wiki/Natural_units, ## t \sim 10^{-21} sec = 10^{21} Hz ##, and since ## \text{GeV} \sim 10^{24} \text{Hz } ##, ## GeV \sim 10^{24} \times 10^{-21} = 10^3 ## in natural units. So is this conversion correct? Also in the above formula, can I convert H to that natural units , since it’s a constant, while keeping k in Hz ?
Back
Top