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The expression for Bohr's radius of an atom is: (1) r= n 2 h 2 / 4 Π 2 me 4 z 2 (2) r= n 2 h 2 / 4 Π me 2 z 2 (3) r= n2h2/4 Π me 3
Point imperfection: They are imperfect point-like regions in the crystal. One or two atomic diameters are the typical size of a point imperfection. A substitution impurity and an
Q. Extraction of f-block element ? As all the lanthanides occur together in nature, their extraction involves two main steps: (i) separation from one another and (ii) reducti
The free energy change for the formation of oxide of aluminium is highly negative ( -1000 to -1100) so , it can easily reduce any metal oxide abve it easily in ellingham diamgram a
Volume of diatomic gas is less than the monatomic gas , although diatomic gas has 2 moles ( 2 times atomes) than monoatomic gas ?? Ans) The answer is derived by avogadros law
nuclear quadruple resonace
what are grignard reagants ? how are tthey prepared is laboratory ? what makes them so important in synthetic chemistry?
the simplest forms of physical quantities
Q. Show the Extraction of Oxygen? Oxygen is separated from air on a large scale by the fractional distillation of liquid air. It is obtained as a by-product along with hydrogen
how does molar volume varies with: a) a decrease in temperature d) an increase in pressure
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