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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
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The electron pair which forms a bond between two similar non-metallic atoms will be: (1) Dissimilar shared between the two (2) By complete transfer from one atom to other
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role of modifiers in solvent extraction of metal ion
Each element has a unique number of protons. This unique number is known as the element's atomic number . All atoms of a given element have the same atomic number. For example:
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