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formation of polyfunctional compounds
explain why Ni(co)4 is known while Ca(co)4 is not known
Number of electron does species have The H2 2- ion can be conceived to result from the combination of two hydride ions (H-). This species have four electrons; two occupy the b
Which of the following orbital is not possible: (1) 3 f (2) 4 f (3)5 f (4) 6 f Ans: 3 f
When an electron drops from a higher energy level to a low energy level, then: (1) Atomic number decreases (2) Energy is absorbed (3) Atomic number increases (4) Energ
H-C=CH-CH-c
Potassium permanganate is prepared from pyrolusite (MnO 2 ) . Pyrolusite is fused with KOH in the presence of atmospheric oxygen or an oxidising agent like potassium nitrate or po
Equilibrium constants A complex in general is any species build by specific association of molecules or ions by donor-acceptor interactions. In aqueous solutions the most import
Uncertainty in position of a 0.25 g particle is 10 -5 . Uncertainty of velocity ( h = 6.6 x 10 -34 Js) is: (1) 1.2 x 10 34 (2) 2.1 x 10 -29 (3) 1.6 x 1
how to find out oxidation state?
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