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CARBON, SILICON AND GERMANIUM
With the valence electron configuration s2p2 the nonmetallic group of elements 14 may form compounds with four tetrahedrally directed covalent bonds. Only carbon forms strong and rigid multiple bonds and its compounds define many differences in properties and structure from those of Si and Ge. The metallic elements of the group (Pb and Sn), germanium has some stable and reliable divalent compounds.
The abundances of the elements by weight in the crust are: Si 27% (second only to oxygen), C and Ge Carbon is locating as carbonate minerals and in smaller amounts as the element and in hydrocarbon deposits. It is required in the atmosphere (as the greenhouse gas CO2) and is the major element of nature. Silicate minerals are the dominant chemical compounds of the underlying mantle and of the crust. Germanium is strongly but thinly distributed in silicate and sulfide minerals.
2NO(g)+2H2O yeilds N2+2H2O Write the rate law for the pervious reaction if doubling the concentration of H2 doubles the reaction rate, and if doubling the concentration of NO incre
raoult''s law and its three forms
aavart sarini ke liye koi trick hai kya?
Branched chain polymers - Classification of polymers These are polymers where the monomers are connected to make long chains with side chains or branches of dissimilar sizes.
There are three assignments due on the 25th I can''t give the questions because it is online
bohr model for hydrogen atom?
Sn + No3- ------- Sno2 + No2
The coordination number of Ni in the complex is 4, the configuration of Ni +2 , at first sight, shows that the complex is formed by sp 3 hybridization and it is paramagnetic an
GROUP 13: ALUMINUM TO THALLIUM The substance aluminum, indium, gallium and thallium have valence electron configurations (ns) 2 (np) 1 and for the lighter elements their chemis
Q. What are the properties of liquids? Ans. Evaporation of Liquids When we place a liquid in an open container, it slowly disappears. If we heat a liquid it disappear
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