question_answer

It is given that e/m for electron is 2000 times the value for proton (\[{{H}^{+}}\]). Calculate the charge to mass ratio for \[H{{e}^{2+}}\] in comparison to e/m of electron, when the mass of He is four times the mass of hydrogen.

A) e/m for electron is 1000 times than that for \[H{{e}^{2+}}\]

B) e/m for electron is 2000 times than that for \[H{{e}^{2+}}\]

C) e/m for electron is 3000 times than that for \[H{{e}^{2+}}\]

D) e/m for electron is 4000 times than that for \[H{{e}^{2+}}\]

E) None of these