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7 January, 10:25

What is a pseudo-noble gas configuration? Give an example of one ion from Group 3A (13) that has it.

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  1. 7 January, 12:06
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    Pseudo-noble gas configuration which can also be called pseudo inert configuration is when elements have fully filled d-orbital, along with s - and p - orbitals. Examples are ions of elements, this is because they lose their valence electrons to be fully filled in order to have a stable octet.

    Example of Group 3A (13) ion is Aluminium ion; Al3+. Al3 + takes up the configuration of Neon when it loses its 3 valence electrons.

    Electronic configuration of Al and Al3+

    Al = [Ne] 3s2 3p1

    Al3 + = 1s2 2s2 2p6
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