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29 May, 18:28

How many valence electrons in Al3+?

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  1. 29 May, 20:31
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    Aluminum has an atomic number of 13. The electronic configuration of Al is 1s2 2s2 2p6 3s2 3p1. Al3 + has only 10 electrons so the configuration of Al 3 + is 1s2 2s 2 2p 6. The highest energy level is 2 so the number of electrons in the highest level is the valence electrons which is 8.
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