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describe iron exchange process
The band model of solids is an extended of the molecular orbital (MO) method. The overlap of atomic orbitals in an extended solid produces rise to continuous bands of electronic en
(a) Explain in terms of ionic equilibria why the aqueous solution of a salt derived from a weak acid and a strong base (e.g. sodium phenolate) has a pH greater than 7. (b) B
test for acidic radicals
What is basically Gibb''s free energy change?Why it is required and How is related to spontaneity of a chemical reaction ? Ans) The energy associated with a chemical reaction t
why YbS and YbI2 are semiconducting solids but LaS and LaI2 show metallic character..
Definitions A Br ø nsted base a proton acceptor, and Br ø nsted acid is a proton donor. In this definition an acid-base reaction accepts protolysis:
Differentiate between extrinsic and intrinsic semiconductor. Obtain an expression for the carrier concentration for an intrinsic semi-conductor. Also demonstrate that Fermi level i
Calculate the ratio of d number of molecules in two energy levels at 27''c given E2=9.75x10"-13erg/mol E1=6.95X10"-13erg/mol g1=2 g2=3
If hydrogen atom is in an energy level represented by n=4,how many spectral lines are possible in its emission spectrum? Ans) There is a formula for this i.e [ (n 2- n 1 +1)
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