I am trying to learn noble gas electron configurations, but I am confused because I am seeing different orders of doing the notations than what I was seeing when doing the ground state (normal) electron configurations. For example, I was trying to do the noble gas electron configuration for cadmium, and using the chart I came up with: [Kr] 5s^2 4d^10 But then, I wanted to check to make sure that I was right so I googled it, and it was a different answer?? It flipped it around and said that the correct configuration was: [Kr] 4d^10 5s^2 So then I was super confused and watched a video to see if they would explain why you do it in a different way, but then the guy in the video did it the way I originally did it!? And so I kept looking and now I am seeing two different answers online. It seems whenever a noble gas electron configuration involves anything from D block, they put D block first in the configuration. But then again, some people aren’t doing it this way. Could somebody please explain why it’s being done two different ways in these instances, or if the order even affects anything?
I am trying to learn noble gas electron configurations, but I am confused because I am seeing different orders of doing the notations than what I was seeing when doing the ground state (normal) electron configurations.
For example, I was trying to do the noble gas electron configuration for cadmium, and using the chart I came up with: [Kr] 5s^2 4d^10
But then, I wanted to check to make sure that I was right so I googled it, and it was a different answer?? It flipped it around and said that the correct configuration was: [Kr] 4d^10 5s^2
So then I was super confused and watched a video to see if they would explain why you do it in a different way, but then the guy in the video did it the way I originally did it!?
And so I kept looking and now I am seeing two different answers online. It seems whenever a noble gas electron configuration involves anything from D block, they put D block first in the configuration. But then again, some people aren’t doing it this way.
Could somebody please explain why it’s being done two different ways in these instances, or if the order even affects anything?
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