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प्रश्न
Answer the following.
La belongs to group 3 while Hg belongs to group 12 and both belong to period 6 of the periodic table. Write down the general outer electronic configuration of the ten elements from La to Hg together using the orbital notation method.
उत्तर
- La and Hg both belong to period 6. Therefore, n = 6.
- Elements of group 3 to group 12 belong to the d-block of the modern periodic table.
- The general outer electronic configuration of the d-block elements is ns0-2 (n – 1)d1–10
- Therefore, the outer electronic configuration of all ten elements from La to Hg is as given in the table below.
Element Outer electronic configuration La 5d16s2 Hf 5d26s2 Ta 5d36s2 W 5d46s2 Re 5d56s2 Os 5d66s2 Ir 5d76s2 Pt 5d96s1 Au 5d106s1 Hg 5d106s2
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