Electron Configurations
300
The electron configuration for copper is this.
What is 1s22s22p63s23p64s23d9, or [Ar]4s23d9.
400
The electron configuration of this element is 1s22s22p63s23p64s23d104p65s24d9.
What is Ag (silver).
500
The electron configuration of lead is this.
What is 1s22s22p63s23p64s23d104p65s24d105p66s24f145d106p2, or [Xe]6s24f145d106p2.
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