📝 Multiple Choice Question
General-science
Moseley observed that the plot of √𝑣 against atomic number (𝑍) gave a straigth line. What does 𝑣 indicate here?
A
Frequency of 𝛾-rays emitted
B
Frequency of 𝛼-rays emitted
C
Frequency of X-rays emitted
D
Frequency of 𝛽-rays emitted
Explanation
In 1913, Henry Moseley discovered a systematic relationship between the frequencies of X-rays emitted by elements and their atomic numbers, establishing Moseley's Law. This historically proved that the atomic number is a genuine physical property linked to nuclear charge, leading to the definitive reorganization of the periodic table.
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