Chemistry

What is the zeff value for a valence electron in an oxygen atom?

An explanation would be much appreciated.

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  1. I found an answer with explanation on the web.
    http://www.chemicalforums.com/index.php?topic=25187.0

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  2. Electronic configuration of oxygen: 1s2 2s2 2p4
    S= 0.35x6 + 0.85x2
    = 2.1 + 1.7
    = 3.8
    Z eff = 8-3.8
    = 4.2

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