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Chemistry - Assignment Example

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Elements with atomic numbers of 110 and beyond have not yet been discovered. Which of the elements with atomic numbers in the range of 110 - 118 would have chemical properties most like those of thallium (Tl)? Explain why it is possible to make this kind of prediction.
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Download file to see previous pages Periodicity can be found in ionization energies and electronic affinities along the groups in the periodic table (Atkins). This prediction can be made because of arrangement of atoms on the basis of valence shell electrons in the periodic table.
In heteronuclear molecules, some atoms are more electronegative than others. The electron pair in a bond in such a molecule is shared unequally. The more electronegative atom attracts the shared electron pair, causing a polarity in the bond. The more electronegative atom has a partial negative charge, while the other atom has a partial positive charge. Molecules where the difference in electronegativities is low (0) are nonpolar, while those with greater differences are polar (see Figure 1). In molecules with very high electronegativity differences, the bonds are ionic as the electrons are with the electronegative atom (Atkins; ...Download file to see next pagesRead More
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