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For an electron if the uncertainty in velocity is Δ v , the uncertainty in its position( Δ x ) is given by:
(1) hm/ 4 Π Δ b
(2) 4 Π / hm Π v
(3) h/ 4 Π Π b
(4) 4 Π m / h Δ v
ans: h/ 4 Π Δ b
some structures containing polyfunctional groups
Halides and halide complexes Almost all elements create thermodynamically stable halides. The general stability sequence is F>Cl>Br>I, that in covalent compounds follows the su
The four quantum number for the valence shell electron or last electron of sodium (Z = 11) is: (1) n =1, l= 1, m= -1, s= -1/2 (2) n =3, l=0, m=0, s= +1/2 (3) n =3,
Which sample is better to use, bigger sample or smaller sample?
NUMERICAL OF KOHLRAUSCH LAW ON CONDUCTIVITY
Free radical aromatic substitution - Hydrocarbon The aromatic substitution reactions that follow free radical mechanisms are extremely few and have limited synthetic value. Alt
A mixture of air and methanol vapour is fed to a converter in which the following reactions take place: CH OH O HCHO H O 3 2 2 2 1 + ® + 3 2 CH OH ® HCHO + H In addit
effeciency of plate of chromotography
A sample of caco3 and mgco3 weighing 192 g is ignite to constant weight of 10 g. calculate sample composition.
Atoms consists of protons, neutrons and electrons. If the mass of neutrons and electrons were made half and two times respectively to their actual masses, then the atomic mass of
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