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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.
Antibiotics: A chemical substance generated by or derived from living cells that is able of inhibiting the life procedures or even destroying micro-organism is known as Antibio
Explain cesium fluoride Compound (2), cesium fluoride, would be most likely to exist as an ionic species, due to Cs and F come from opposite corners of the periodic table.
Give the styx code of b4h10 and which type of bond present in it?
write the different units of hardness with their relationship
limitation of Chrystal field theory
what is molality?
Why do Zr and Hf show similar properties?
The ionization energy of hydrogen atom is -13.6eV. The energy required to excite the electron in a hydrogen atom from the ground state to the first excited state is (Avogadro's co
between nitrobenzene and phenol which is more reactive towards chlorine and why? Upon reaction with chlorine what products can be formed from the two reactions.
Which one of the following is not isoelectronic with O 2- : (1) N- 3 (2) F - (3) Tl + (4) Na + Ans: Tl +
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