Tellurium ionization energy

On the basis of your knowledge of periodicity, place each of the following sets of elements in order of decreasing ionization energy. Explain your choices, (a) Selenium, oxygen, tellurium (b) gold, tantalum, osmium (c) lead, barium, cesium. 

Arrange the following atoms in order of increasing first ionization energy oxygen, tellurium, selenium. 

The group of the chalcogens sulfur, selenium and tellurium is a typical triad of the more electronegative nonmetals with relatively high-ionization energies, relatively strong element-element bonds and a clear tendency to form mono-and polyatomic anions (Table 1). 

The compound ZnTe has metallic properties, and so far as the valency is concerned it can be thought of as heteropolar. The electron cloud is more concentrated around the tellurium atoms, so that they assume a negative charge with respect to zinc and, consequently, the metallic bond acquires the characteristics of an ionic one. Decreasing ionization energy causes the homopolar to change over into the metallic, as for example in the series... 

Write equations that show the processes that describe the first, second, and third ionization energies of a tellurium atom. 

Free energies, for ionization and electron attachment, 1, 817 Free radical species tellurium, 9, 618 for tellurium removals, 9, 640... 

Since the extravalent d orbitals of sulfur, selenium, and tellurium are not occupied in the normal states of the free atom, their implicit functional form is determined by another criterion. The values of a number of molecular properties including ionization potentials, energies of electronic transitions, and overlap populations have been examined as a... 

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