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Till 20elememts write the no of electrons in outermost shell.if less than 4 then this is the valency otherwise subtract from 8
Tetracyclines: The tetracyclines consist of hydronapht-hacene skeleton like the characteristic structural unit. The structures of tetracycline are specified as follows,
Bohr model of an atom could not account for : (1) Emission spectrum (2) Absorption spectrum (3) Line spectrum of hydrogen (4)Fine spectrum Ans: Fine spectrum
Physical properties of Amino acids (a) Amino acids are colourless, crystalline substances comprising sweet taste. They melt along with decomposition at higher temperature (much
How is ethane gas is preparec in the lab?
Salt bridge is a U-shaped tube containing a semi-solid paste of some inert electrolyte like KCl, KNO 3 , NH 4 Cl, etc. in agar-agar and gelatin. An inert electrolyte is one which
The reluctances of ns electrons in the participation of bond formation is known as inert pair effect
Q. How to evaluate mass number? An isotope of an element is recognized by its mass number which is the sum of the number of protons and neutrons in the atom's nucleus. Mas
What is the meaning of Casting - fabrication processes Fe-C alloys with more than 2% carbon are known as cast irons. On crossing liquidus, proeutectic crystallizes first. O
Carboxylic Acids Carboxylic acids are the elements comprising the carboxyl functional group The carboxyl set is made up of carbonyl (>C=O) and hydroxyl (-OH) group.
why is the f-block grouped in the way it is
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