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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.
Nitrogen Containing Compounds The important nitrogen consisting of organic compounds that are alkyl nitrites (RONO), nitro-alkanes (RNO 2 ), amines (- NH 2 ), aromatic nitro co
metals iron, aluminium, copper, gold, etc. have great industrial significants. which are their important ores? important alloys of iron, aluminium and copper and their uses.
Non - ideal solutions exhibit either positive or negative deviations from Roulette's law. What are these deviations and why are they caused? Explain with one example for each t
which one is more stable cis or trans
diagonal relationships
For the n= 2 energy level, how many orbitals of all kinds are possible: (1) 2 (2) 3 (3) 4 (4) 5 Ans: 4
Nomenclature of simple aromatic compounds Aromatic compounds are those that consist of one or more benzene rings in them. An aromatic substance has two major types: (1) Nucl
Atoms or group of atoms which are electrically charged are known: (1) Anions (2) Cations (3) Ions (4) Atoms Ans:
Q. Describe SI System and Standards Ans: What units you will you use science class? Long ago people decided that the "foot" must be standardized so that when I measure
What is inductomeric effect with example and what is difference between inductive and inductomeric effect
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