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Grade: 12
        
Why transition elements have irregularities in their electronic configuration?
 
Why transition elements have high hydration enthaly?
23 days ago

Answers : (1)

Arun
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1.)
 
Transition metal elements i.e. the d-block elements shows irregularities in their electronic configurations, for example, chromium has a 4s13d5 electronic configuration rather than the 4s23d4 configuration as it should be according to aufbau principle, similarly, copper is having 4s13d10​ rather than 4s23d9. This kind of anomalies can be attributed to the extra stability associated with half-filled and completely filled sub-shells. Moreover, the ns and (n − 1)d sub-shells of d-block elements are having similar energy, hence even relatively small effects are enough to introduce apparently anomalous electron configurations.
23 days ago
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