A) fourth power of the atomic number of the element
B) square root of atomic number of the element
C) square of the atomic number of the element
D) atomic number of the element
Correct Answer: C
Solution :
According to Moseleys law the frequency of a spectral line in a spectrum\[v={{a}^{2}}(Z-{{b}^{2}})\] Hence frequency of a spectral line in \[X-\]ray spectrum varies as the square of the atomic number of the element.
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