Discovery Of Sub Atomic Particles

Moseley’s Law Analysis:

Moseley’s law describes the relationship between the square root of the frequency of X-rays emitted ( ) and the atomic number ( ). According to Moseley’s observations:

where is a constant that accounts for the screening effect of inner electrons. The graph of versus is a straight line, as frequency is directly proportional to the square of the atomic number minus the screening constant.

Analysis of Options:

1. vs : This correctly represents Moseley’s observation, as the relationship is linear.
2. vs : This is incorrect, as the relationship does not involve the square root of the atomic number.
3. vs : This does not follow Moseley’s law, as the relationship is not linear.
4. vs : This is incorrect, as the relationship is based on the square root of frequency,not the square of frequency.

Conclusion: The correct answer is option (1).