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30 August, 23:29

Z=3 1s2 express answer as an ion

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  1. 30 August, 23:47
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    The element with electronic configuartion 1s² and atomic number 3 must be an cation.

    Explanation:

    The "Z" shows the atomic number. Z stand for zahl. It Is German word and meaning is " number".

    In given question Z is equal to three which means an element with atomic number three.

    Let consider the X is an element with atomic number three having electronic configuration 1s², but according to this atomic number there should be one more electron present is 2s. If X has the electronic configuration 1s² it means that it lose one electron and X is present in the form of cation.

    X⁺ = 1s²
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