Monday, September 23, 2019

inorganic chemistry - Why is the ground state electronic configuration of Group 10 (Ni group) elements so anomalous?


While studying about d block elements I came across this table showing outer shell electronic configuration of group 10 elements



Ni 3d8 4s2


Pd 4d10 5s0


Pt 5d9 6s1



(Source Concise Inorganic Chemistry, JD Lee, adapted by S. Guha Pg 563)



Now I cannot understand the reason behind this. If we consider that Pd has changed its config. to attain stability then what's wrong with Ni and Pt? And should the outer shell electronic configuration of the ground state not be same in elements down a group?


Edit


To those who have marked my question as a duplicate of the one mentioned, I humbly request to explain me which answer to the above mentioned question (of which mine is marked as a duplicate of) tells about the anomalous behavior of group 10 elements and why Zn assumes d10 config and none of the others in the group do the same and again Pt assumes a 5d96s1 config, while Ni does not. Also please do point out where can I find an answer to why in this particular group there is no similarity in ground state electronic configuration b/w elements of the group. Thank You.




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