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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
Q. Show the Occurrence of the f-block element? Apart from promethium which is unstable and is found in traces in uranium ores, all the lanthanides usually occur together. Altho
How does crystallography help in study of crystal structure
Calculate the combustion energies for the burning of 1 mol of propane and butane. It can be supposed that all reactants and products are obtained under standard conditions.
write a note on the oxide of 3d transition metal
Law of equivalence - Volumetric analysis The Law of equivalence is applied in all volumetric estimations. As per to it, the chemical substances react in the ratio of their
what is the actanoid contraction
Al is used as reducing agent for the extraction of metals such as Chromium,Monganes.Explain why? Solution) Al3+ + 3 e- Al Good reducing agents like aluminum have relatively
Which forms a crystal of Nacl: (1) Nacl molecules (2) Na + and cl - ions (3) Na andcl atoms (4) None of the above Ans: Na + and cl - ions
Low-grade phosphate rock can be upgraded by flotation processing. In this process the low-grade rock is grounded into a powder and suspended as a water slurry. The addition of smal
Explain Solubility of one liquid in another -Liquid–Liquid Equilibria Suppose substances A and B are both liquids when pure. In discussing the solubility of liquid B in li
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