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13 April, 08:29

The first ionization energies of an element are approximately 738 kj/mol, 1450 kj/mol, 7.7 * 103 kj/mol, and 1.1 * 104 kj/mol. to which periodic group does this element belong?

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  1. 13 April, 11:27
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    Theres a big jump between the 2nd and 3rd I. E. so the element has 2 valence electrons hence Group 2
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