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stable structure - Rothschild Science
stable structure - Rothschild Science

... Polyatomic Ions- A group of covalently bonded atoms that have a charge. The charge is attracted to the charge on a metal to form an ionic bond. ...
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SAMPLE QUESTION PAPER CHEMISTRY (043) CLASS XII (2013-14)

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DS 39: Thin Film Applications - DPG

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pblock - Chemistry Courses

... 2nd period: Only s and p orbitals are possible with n = 2 Therefore, the maximum number of bonds is 4 (single and/or double bonds) Examples: CH4, NF4+, BH43rd (and higher periods): can use d-orbitals to make bonds E.g. ...
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PPT - Weizmann Institute of Science

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... CH3COOH + NaHCO3  CO2 + H2O + NaCH3COO Acid and metal reactions Acids react with metals to produce hydrogen gas and a salt. An example of this is seen between HCl and K which produces H2 gas KCl and a lot of energy which is seen as light and heat. In this specific reaction the energy from this reac ...
THE UNIVERSITY OF LETHBRIDGE DEPARTMENT OF CHEMISTRY
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... Explain the position of each of the eight points in the graph in terms of the kinetic molecular theory of liquids and the kinds of intermolecular forces that operate between the molecules in pure liquids of the given composition. Discuss all the intermolecular forces that apply in each system. The g ...
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... The dz2 and dx2y2 orbitals lie on the same axes as negative charges. Therefore, there is a large, unfavorable interaction between ligand (-) orbitals. These orbitals form the degenerate high energy pair of energy levels. The dxy , dyx and dxz orbitals bisect the negative charges. Therefore, there is ...
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ADSORPTION ION EXCHANGE RESINS

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23.2 - Transition-Metal Complexes 23.3

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High capacitance of surface-modified 2D titanium

... rise to the broadened and convoluted spectra seen in the Ti 2p region (Fig. 2C). In this region, the Ti-carbide photoemission arises from Ti3C2, while the Ti (II) and Ti (III) components arise from these mixed oxides and carboxides, and the Ti (IV) component arises from TiO2 present on the surface o ...
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... stable oxidation state, is highly insoluble at pH 7 Complex biological mechanisms have been developed to accommodate the low solubility of Fe(OH)3 (Ksp = 1 x 1038) ~ pH 7, and take advantage of its high "availability". • Co2+ and Zn2+ have very similar coordination chemistry and ionic size and can ...
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... will occur depends on reactivity of elements  Use activity series  The more reactive ...
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insoluble compounds of heavy metal complexes

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Derivation of the BET and Langmuir Isotherms

... low pressures the nitrogen molecules begin to fill the slots. As the pressure increases, more nitrogen gets adsorbed as can be seen in the near linear low pressure part of the na /nm vs P curve. As the pressure continues to increase, the slots fill up and eventually the surface is covered. At this p ...
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Surface chemistry Surface chemistry deals with phenomena that

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Surface properties of transition metal oxides

Transition metal oxides are compounds composed of oxygen atoms bound to transition metals. They are commonly utilized for their catalytic activity and semiconductive properties. Transition metal oxides are also frequently used as pigments in paints and plastics, most notably titanium dioxide. Transition metal oxides have a wide variety of surface structures which affect the surface energy of these compounds and influence their chemical properties. The relative acidity and basicity of the atoms present on the surface of metal oxides are also affected by the coordination of the metal cation and oxygen anion, which alter the catalytic properties of these compounds. For this reason, structural defects in transition metal oxides greatly influence their catalytic properties. The acidic and basic sites on the surface of metal oxides are commonly characterized via infrared spectroscopy, calorimetry among other techniques. Transition metal oxides are also able to undergo photo-assisted adsorption and desorption to control their semiconductivity. One of the more researched properties of these compounds is their response to electromagnetic radiation, which makes them useful catalysts for redox reactions, isotope exchange, specialized surfaces, and a variety of other uses currently being studied.
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