Consider four ions q1, q2, q3 and q4. q1 has a charge +3 and mass of 290 Da, q2 has a charge +2, and mass of 290 Da, q3 has a charge +3 and mass of 390 Da, and q4 has a charge +2 and mass of 390 Da. Which one of these ions has a maximum m/z ratio?

• A. q1
• B. q2
• C. q3
• D. q4