The experimental observation correctly account phenomenon, Chemistry

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In which one of the following pairs of experimental observations and phenomenon does the experimental observation correctly account for phenomenon:

(1) X-ray spectra                     Charge on the nucleus  

(2)α -particle scattering            Quantized electron orbit 

(3)Emission spectra                  The quantization of energy 

(4)The photoelectric effect         The nuclear atom

Ans: (c)Emission spectra           The quantization of energy

 


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