NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

The ratio for divalent ions in mEq is 10.5. This means that for every 1 unit of divalent ions, there are 0.5 units of charge. Option A is incorrect because it suggests a 1:1 ratio, which would mean equal amounts of divalent ions and charge, but this is not typically the case for divalent ions. Option C is incorrect because it suggests a 2:1 ratio, which would mean there are twice as many divalent ions as charge, which is also not typical. Option D is incorrect because it suggests a 0.5:1 ratio, which would mean there is more charge than divalent ions, again not typical for divalent ions. Therefore, option B is the correct answer with the appropriate ratio for divalent ions in mEq.