Is the condensed (noble has core) configuration of Ag.....[Kr] 4d^10,5s^1??
Yes.
why would it not be [Kr] 5s^2,4d^9
Half-filled as well as completely filled, give
-higher stability (high stability is achieved when the d orbital is filled or half-filled, while half-filling the s orbital); and
-lower energy to the atom (there is greater electron-electron repulsion if s orbital is filled when one electron from s orbital can be transferred to the unoccupied 3d orbital)
An example of half-filled is Cr, which has a noble gas core config of [Ar]3d5 4s1.
Hope this helps~ :)
To determine the condensed electron configuration of Ag (Silver), we need to first determine the electron configuration of the element, and then identify the noble gas that can be used as a core.
The electron configuration of Silver (Ag) is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^9.
The noble gas that we can use as a core for Ag is Kr (Krypton).
So, the condensed (noble gas core) electron configuration of Ag is [Kr] 5s^1 4d^10.