Question

Which of the following is a possible Noble gas notation?

[Ar] 4s^24p^2
[Ar] 3s^23p^6
[Ar] 4s^23d^104p^2
[Ar] 3s^23d^10

Answer 1

noble gases will always have a filled orbital remember that

Answer 2

this topic is so challenging for me:/
so that means that it would have an energy level of 4? @Photon336

Answer 3

[Ar] 3s^2 3d^10, is wrong b/c it's 4s^2 then 3d
[Ar] 4s^2 4p^2 you can't have 4p^2 filling before 3d. similar as 1.
[Ar] 4s^2 3d^10 4p^2 (noble gases have the p orbital filled.
[Ar] 3s^2 3p^6 makes the most sense to me.

Answer 4

Thank you! Do you know any websites that could help me get a better understanding of this? @Photon336

Answer 5

Here is a good website: http://chemwiki.ucdavis.edu/Inorganic_Chemistry/Electronic_Configurations
:-)

Answer 6

Thanks! :) @JoannaBlackwelder

Answer 7

No worries :-)