Answered

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An element contains 25 electrons. How many empty orbitals are in its valence energy level?

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sebassandin

Answer:

No empty orbitals but five unpaired electrons.

Explanation:

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In this case, when going over the empty orbitals in valence energy levels, it is required to develop the electron configuration in order to appropriately describe the element. In such a way, for the element whose atomic number is 25 because it equals the number of electrons, we obtain:

[tex]1s^2,2s^2,2p^6,3s^2,3p^6,4s^2,3d^5[/tex]

It means that the d orbital is half filled which means that it does not have any empty orbital wherein two electrons are contained per orbital. Moreover, we can find 5 unpaired electrons according to:

↑  ↑  ↑  ↑  ↑

Which is the orbital notation.

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