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Q. Describe about groups or families in periodic table? Every element may be represented by a one or two letter symbol. In the middle of nineteenth century a Russian chemist Dm
what is radiometric titration
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The ratio of the energy of a photon of 2000Å wavelength radiation to that of 4000 Å radiation is: (1) 1/4 (2) 4 (3) 1/2 (4) 2 Ans
Different Atomic Models
Energy of electron of hydrogen atom in second Bohr orbit is: (1)-5.44x10 -19 j (2)- 5.44x10 -19 kj (3)-5.44x10 -19 cal
diagram
what is nobel gasses
ionic bond has low energy
Mustard Although the primary use of mustard seeds is a condiments, important new food applications are regularly being found. Commercially available mustard products include m
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