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Experimental evidence for the existence of the atomic nucleus comes from:
(1) Millikan's oil drop experiment
(2) Atomic emission spectroscopy
(3) The magnetic bending of cathode rays
(4) Alpha scattering by a thin metal foil
Ans: Alpha scattering by a thin metal foil
seawater contains 0.75g of Fe+3 per kilogram of water. What is the concentration of Fe_3 in ppm?
How much time a hydrogen electron will take when it goes from first orbit to second orbit?
4-nitrotolouene ---> LiAlH 4 converts it to 4-aminotoluene ----> Add HNO 2 and it forms -----> diazonium salt ------> add H 3 PO 2 to get Toluene -----> add Br 2 /CCl 4 - 2
how to determine the ionic product of water?
Calculate energy of Rb per atom if light of wave length 5.4(10^-8)m produces electron with a speed of 2.450(10^6)
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if the electon in hydrogen atom is exited to n=5 the number of diffrent frequency of radiations which may be exited is
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