| [Member (365WT)]answers [Chinese ] | Time :2019-08-31 | | The d-region elements include the period IIIB-VIIB, VII, IB-IIB elements, excluding the actinides and actinides. The d-zone elements are sub-family elements in the periodic table of elements, ie, elements of groups 3 to 12. D in zone D comes from the English "diffuse". The valence electron configuration of the element of the d region is: (n-1)d1-10ns1-2 (Pd is 5s0). The elements in the d zone are all metallic elements. The electrons with the highest energy among these elements are filled in the d orbital. These elements are sometimes referred to as transition metals. |
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