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PART - 1 CH - 3 Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryPART - 1 CH - 3 Classification of Elements and Periodicity in Properties2 Marks
Question
In comparison to the atomic mass of an element, the atomic number is more capable of indicating the properties of that element. Confirm the statement.
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Answer

Moseley observed that there is regularity in the characteristic x -ray spectra of elements and the graph between atomic number $( z )$ and $\sqrt{V}$ is a straight line as $Z \propto \sqrt{V}( V =$ frequency of x -rays $)$ but between atomic mass and $\sqrt{V}$ a straight line do not formed and properties of elements depend on atomic number not on atomic mass. It proves the above statement.

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