Inorganic and Applied Chemistry

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Inorganic and Applied Chemistry

F, 1 s^22 s^22 p^5 , 1 unpaired electron in one of the 2p-orbitals. Paramagnetic.

Ne, 1 s^22 s^22 p^6 , all orbitals of the period are filled and the period is ended. Diamagnetic.

The last attached electron or electrons in the period are (as mentioned earlier) called valence electrons or

bond electrons. If fluor is used as an example the valence electrons are the two electrons in the 2s-orbital

and the five electrons in the 2p-orbitals. The two inner electrons in the 1s-orbital are not valence electrons.

They are called core electrons instead.

Atoms

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