The electronic configuration of Thorium is [Rn]6d^2,7s^2. The differentiating electron enters the d-orbital (6d), and not the f-orbital (5f). Still why Thorium is considered to be a f-block element?

Question

Umakant biswal · Answer

@ shaswata
as we knows that empty , half and fully filled orbitals , are more stable than partially filled orbitals .
so, thatswhy 1 electron from 5f will jump TO 6D ORBITALS for gaining stability , ,
hence , we can conclude that it is just to attain stability the electron moves to d orbitals . but initially it is at f orbitals .
thereby we can say thorium is a F BLOCK ELEMENT .
hope it clears
all the best ..

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The electronic configuration of Thorium is [Rn]6d^2,7s^2. The differentiating electron enters the d-orbital (6d), and not the f-orbital (5f). Still why Thorium is considered to be a f-block element?

The electronic configuration of Thorium is [Rn]6d^2,7s^2. The differentiating electron enters the d-orbital (6d), and not the f-orbital (5f). Still why Thorium is considered to be a f-block element?

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The electronic configuration of Thorium is [Rn]6d^2,7s^2. The differentiating electron enters the d-orbital (6d), and not the f-orbital (5f). Still why Thorium is considered to be a f-block element?

The electronic configuration of Thorium is [Rn]6d^2,7s^2. The differentiating electron enters the d-orbital (6d), and not the f-orbital (5f). Still why Thorium is considered to be a f-block element?

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