Question

from the chapter -atomic structure
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why the electric / mass ratio of a proton is maximum when hydrogen is taken in a discharging tube??​

Answer 1

Answer:

because hydrogen has a very less mass in comparison to other elements... less the mass more is the ratio!!!

Answer 2

Answer:

The highest value of e/m of anode rays has been observed when the discharge tube is filled with hydrogen. Anode rays consists of positively charged ions obtained by removal of one or more electrons from neutral gaseous atom. Among the given gases, hydrogen has least mass. Hence, it has maximum value of e/m