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Thallous chromate, formula Tl2CrO4, is best used in the quantitative analysis of thallium, after any thallic ion, Tl3+, present in the sample has been reduced to the thallous state, Tl+. Thallium is typical of the Group 13 elements in having an s2p1 outer electron configuration. ...
Each mineral has a specific chemical formula, such as SiO₂ for quartz (silicon dioxide) or NaCl for halite (sodium chloride). Variations in chemical composition can result in different minerals with similar properties. Solubility Solubility describes how readily a mineral dissolves in water or oth...
Starting from equilibrium constant expressions of these chemical reactions the corresponding mathematical formulae for calculation of the concentrations of distributing species are derived. If the required chemical reactions in the organic phase are involved, the model fits the experimental data and enables...
in an atmosphere of oxygen or of fluorine. Some tetrachlorides, bromides, and iodides are known for thorium, uranium, and neptunium. The ease with which they can be formed decreases with increasing atomic number.Hydroxidesof a number of these elements in the +4 state also are known; they...
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are often written as H for protium, D for deuterium and T for tritium. This is in order to make it easier to use them in chemical equations, as it replaces the need to write out the mass number for each atom. E.g. the formula for heavy water may be written D2O instead of ²...
Using this formula and the value of activation energy for hydrolysis of polycarbonate of 80 kJ mol−1 (Bair et al., 1981), the expected effects of stress and temperature on bond fracture can be seen in Figure 29. This shows that as the stress is increased, the rate of bond fracture ...
knowledge only one other actinide-nitride complex has been studied by15N NMR spectroscopy, namely the bridging dithorium-nitride complex [(N″)3Th(μ-N)Th(N″)3][K(18C6)(THF)2] (N″ = N(SiMe3)2) described by the Hayton, Autschbach, and Cho groups26....
It's easier to navigate the periodic table and write chemical equations and formulae once you know what all of the element abbreviations are. However, sometimes it's easy to confuse symbols of elements with similar names. Other elements have symbols that don't seem to relate to their names ...