Can someone explain how they are determining the charge to mass ratio here?
View attachment 196662
For choice B, Sodium: charge to mass is 1/11 and calcium is 2/20. The two are pretty close but they are not the same.
When I did this question, I compared the mass of the 2 atoms and the charge of the two atoms. So, I thought that C would be the correct answer since the two atoms have the same mass. What is wrong with my method? How to tackle such problems? Any tips, advise?
Thanks
View attachment 196662
For choice B, Sodium: charge to mass is 1/11 and calcium is 2/20. The two are pretty close but they are not the same.
When I did this question, I compared the mass of the 2 atoms and the charge of the two atoms. So, I thought that C would be the correct answer since the two atoms have the same mass. What is wrong with my method? How to tackle such problems? Any tips, advise?
Thanks