extra i forgot

Question 1

chromium atomic structure why

Answer 1

The reason Copper and Chromium have a slighly odd electron configuration is because of stability. By only having 1 electron in the 4s oribtal, Chromium is able to have 1 electron in each of it’s 3d orbitals, this configuration is more stable than by having [

Ar]4S23d

Question 2

copper structure why

Answer 2

Similarly Copper is able to fill each of it’s 3d orbitals with 2 electrons which is more stable than by having [Ar]4S23d9. Anything in nature will tend towards the most stable state, if any of the less stable electron configurations are created then they will be more reactive and as such over time only the more stable configuration will remain.

Question 3

chromium configuration

Answer 3

1s2 2s2 2p6 3s2 3p6 3d 5 4s1

Question 4

copper configuration

Answer 4

1s2 2s2 2p6 3s2 3p6 3d10 4 s1 .