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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.
Discuss the effect of substituents on the acidity of phenolic group?
Explain variations of electronegativity in group & period
The present atomic weight scale is based on: (1) C 12 (2) O 16 (3) H 1 (4)C 13 Ans: C 12
WHAT IS THE INITIAL CONCENTRATION
Applications of photochemistry in day today life
LIMITATION OF THIRD LAW OF THERMODYNAMICS
Every substance poses exact amount of energy known as internal energy or intrinsic energy (E).
write a short note on colour and constitution
tell me about liquification of gases in detail but in most easy words
To increase the pressure so that boiling point of water increases and heat provided goes only for cooking food not for boiling water
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