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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.
The correct order of increasing energy of atomic orbitals is: (1) 5p (2) 5p (3) 4f (4) 5p Ans: 5p
Q. Explain about Dihalide? Dihalides: Dichlorides and dibromides are formed by the lower members of the group, viz., Se, Te and Po. These are formed mainly by dissociation of t
the value of plank''s constant
bohr model for hydrogen atom?
Which one of the following configuration represents a noble gas: (1) 1s 2 , 2s 2 , 2p 6 , 3s 2 , (2)1s 2, 2s 2, 2p 6 , 3s 1 (3) 1s 2 , 2s 2 , 2p 6 ,
Q. What is law of definite proportions? A given compound is forever composed of the same elements in the same proportion by mass. This fact is recognized as the law of definit
Q. What are the Physical Properties of Nitric Acid? Ans. Nitric acid (HNO 3 ) may be prepared by heating sodium nitrate with sulfuric acid: NaNO 3 + H 2 SO 4 --> HNO
Position isomerism: It is due to the difference in the position of the substituent atom or group or an unsaturated linkage in similar carbon chain. A. Carboxylic, aldehydes
Need help figuring out the proper steps on how to solve: What volume of 1.25M HCl in liters is needed to react completely (with nothing left over) with 0.750L of 0.200M Na2CO3? Usi
what is laws of chemical combination
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