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28 September, 01:00

How to determine the group of an element based on an electron configuration

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  1. 28 September, 01:06
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    You can easily predict the group of any element by it's valence shell configuration. If the valence e confgn is ns1 then it belongs to 1 group if it is ns2 then it is 2 group element. For p block elements it is 10 + no of es of ns& np. Eg. Cl 3s2 3p5. So group no is 17. For d block elements group no is equal to ns + (n-1) d es. For e. g. Cr 4s1 3d5. Group no is 6. For f block elements group no is always 3.
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