Milligram-Milliequivalent Conversions and Atomic Weights
| Ion | Atomic Weight | Valence | 
|---|---|---|
| Hydrogen (H) | 1 | 1 | 
| Carbon (C) | 12 | 4 | 
| Nitrogen (N) | 14 | 3 | 
| Oxygen (O) | 16 | 2 | 
| Sodium (Na) | 23 | 1 | 
| Magnesium (Mg) | 24 | 2 | 
| Phosphate (P)a | 31 | 3, 5 | 
| Chlorine (Cl) | 35.5 | 1 | 
| Potassium (K) | 39 | 1 | 
| Calcium (Ca) | 40 | 2 | 
| Note: The milliequivalent (mEq) is the unit of measure often used for electrolytes. It indicates the chemical activity, or combining power, of an element relative to the activity of 1 mg of hydrogen. Thus, 1 mEq is represented by 1 mg of hydrogen (1 mole) or 23 mg of Na+, 39 mg of K+, etc. | ||
| a As phosphorus, inorganic | ||
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