Question
The e/m ratio for electron was determined by:
The correct answer is
J.J. Thomson
J.J. Thomson and the Electron e/m Ratio
The determination of the charge-to-mass ratio (e/m) for the electron is a fundamental discovery in atomic physics.
J.J. Thomson is the scientist credited with measuring this ratio in 1897.
Key Findings
- J.J. Thomson conducted experiments using cathode ray tubes.
- He measured the deflection of cathode rays in electric and magnetic fields.
- By analyzing these deflections, he calculated the ratio of the electron's charge (e) to its mass (m).
- This measurement was crucial evidence for the electron being a fundamental particle and provided its charge-to-mass ratio, e/m = 1.7588 × 1011 C/kg.
Conclusion
Therefore, J.J. Thomson determined the e/m ratio for the electron.
Was this answer helpful?
Important Questions from Structure of Atom
- How many moles of He atoms are present in its 20 u mass ?
Which of the following electron transition in hydrogen atom will require largest amount of energy?
A species having 8 electrons in the third shell is very reactive while the other species having 8 electrons in the third shell is very inactive they are :
Which of the following is the general formula for saturated hydrocarbons?
Which one of the following is the average atomic mass of chlorine atom?
Need Expert Advice?
