Chapter 2, #43 [ENDORSED]

[donnanguyen1d]

How come the electron configuration for Silver (Ag) is [Kr]4d105s1 and not [Kr] 4d9 5s2?

[Alyssa Parry Disc 1H]

This is because like copper right above it, the half full or full d subshells (4d5 or 4d10) are more stable than 4d4 or 4d9 so the electron is in the 4d subshell rather than the 5s subshell

[Michelle Dong 1F]

Any element in group 11 follows a similar electron configuration of Cr, in which the d subshell is full and the s subshell misses an electron.

[Jasmine Botello 2F]

This follows the patterns of Copper. The reason is to make it more stable. When going to the next element, you would then fill the s subshell.