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An element X with the electronic configuration 1s2, 2s2, 2p6, 3s2, would be expected to form the chloride with the formula:
(1) XCl3
(2) Xcl2
(3) XCl
(4) X2Cl
Ans: Xcl2
Pauli's exclusion principle states that: (1) Two electrons in the same atom can have the same energy (2) Two electrons in the same atom cannot have the same spin (3) The
The rate constant for a reaction of Zero order in A is 0.0030 mol L¯¹ s¯¹. How long will it take for the initial concentration of A to fall from 0.10 M to 0.075 M?
Baeyer's reagent - Tests of unsaturation It is 1% solution consisting of sodium carbonate. It is of pink in colour. An aqueous solution of the element, some drops of Baeyer's
Q. Explain about Extraction of metals? Extraction of metals is very often done by complex formation. For example, the cyanide process for the extraction of silver and gold is w
migration of ions,relative speed of ions,transport number,determination of ph from EMF method
The boron trihalides are highly volatile; BF 3 (b. p., 173 K) and BCI 3 , (b. p., 260.5 K are gases, BBr 3 a volatile liquid (b. p., 319 K) and Bl 3 a low melting solid (m. p.,
account for the effects of solvents on the wavelength of absorption of the acetone in terms of the hydrogen bonding properties of the solvent used
Q. What is speed of light wave? Ans. Light is just one type of wave. Like all waves it can be characterized by frequency, wavelength and amplitude. Similarly, light waves ca
What property command to water soluble vitamins permits water solubility Ans) Because of 1]OH bond between them 2] polar componets 3] Availibility of in nature
In the chemical reaction, Al(s) + CuCl2(aq) --> Cu(s) + AlCl3(aq), why did the Copper turn green after being left for a day?
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