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GEOCHEMISTRY
The chemical processes taking place in the crust are especially important as they have build ores, concentrated mineral deposits that are exploited industrially as sources of specific components and their elements. Summarizes the principal chemical forms in which each element perform. At least half the elements prepare in the crust as oxides (mostly complex ones such as silicates) or less commonly as halides, and are called lithophiles. All the bigger electropositive metals are in this class. Chalcophiles are components present in sulfide minerals; these include some elements chemically same to sulfur (As, Se) together with less electropositive metals of the later post transition and transition metal groups.
Fig. 1. The periodic table showing the principal types of chemical compound occurring for elements at the Earth's surface.
drawbacks of bohr thory
Q. What are the properties of water? Ans. Water is a colorless, odorless, tasteless liquid with a melting and freezing point of 0 o C and a boiling point of 100 o C at 1 a
Types of interferences: The various kinds of interferences encountered in analysis through flame photometry are: Spectral interferences Ionisation interferences
write the different units of hardness with their relationship
The concentration of the product in the equilibrium is enhancing with increasing concentration of the substrate. ? ? The concentration of the product in the equilibrium
sodium does not react with a) Carbon b) Nitrogen c) Hydrogen d)both a an b
How Dalton''s Atomic theory explains these laws..
Assainment of liquefaction of gases in degree 2 nd sem
how to make assignmant//
A useful model of interfacial mass transport makes three assumptions: (i) there is a difference between the concentrations of A at the interface, C A denoted C A in Phases I
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