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An element having electronic configuration [Ar]3d2, 4s2 belongs to(A) d-block.(B) f-block(D) p-block.(C) s-block |
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Answer» Here n=4 it lies in d-block The symbol[Ar]in the condensedelectron configurationof this element resembles the electron configuration of a ground-state argonAratom. It represents all inner shell electrons of this atom. (seethis problemfor details about condensed electron configurations.) On the top of that, a ground-state atom of this element would containvalence electrons3d74s2. It would lie in the period right underneath the one containing argon. Argon is the last element of the third period. As a result, this element is in the fourth period ofthe periodic table. (And hencen=4) The block on the periodic table an element belongs to is dependent on the type of the occupied electron orbital of highest potential energy. |
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