Which of these is not a gas? A. hydrogen B. gravity C. Oxygen D. heluim
2 answers:
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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:
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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