In which group all the elements do not have
same number of valence electrons?
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Every element in a group have same number of valence electrons depending upon the group to which they belong...
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Explanation:
modern periodic table is based on the atomic number of elements,what was the experiment which proved the significance of atomic number from the following
1)mullikan's oil drop experiment
- 2)moseley's work on x-ray spectra
3)Bragg's work on X-ray diffraction
4)discovery of x-rays by rongten
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