Thomson's experiment showed that the charge-to-mass ratio of electrons was
A the same in all gases.
B greater with noble gases than for other gases.
C less with noble gases than for other gases.
D dependent on the element's atomic mass.

J.J. Thomson in his Cathode ray experiment showed that the atoms are made of aggregate charged particles. Until his demonstration it was believed that atoms were smallest unit. In his calculation he also showed that charged to mass ratio is same in all the elements.

[tex]\frac{e}{m} = constant[/tex]=[tex]1.7588196\times10^11 \frac{C}{kg}[/tex]

Thomson's experiment showed that the charge-to-mass ratio of electrons was A the same in all gases. B greater with noble gases than for other gases. C less with noble gases than for other gases. D dependent on the element's atomic mass.

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Thomson's experiment showed that the charge-to-mass ratio of electrons was
A the same in all gases.
B greater with noble gases than for other gases.
C less with noble gases than for other gases.
D dependent on the element's atomic mass.