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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
explain crystallization as a method of separating mixture
why cerium oxides is less soluble in water?
what is symetrycal tribromo benzene
What is the principle underlying the extraction of metal
how does solvation of alkali ions occur
clark''s method
can all the total heat content available betotally converted to work done?
Delocalisation of electrons in conjugated system is called resonance. For example there is delocalisation of electrons in benzene ,hence we write kekule structure for benzen.
CARBON, SILICON AND GERMANIUM With the valence electron configuration s 2 p 2 the nonmetallic group of elements 14 may form compounds with four tetrahedrally directed covalent
concept of electrode potential
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