Merck Manual

Please confirm that you are a health care professional

honeypot link

Milligram-Milliequivalent Conversions and Atomic Weights

By

Susan E. Fielder

, DVM, MS, DACVP (Clinical Pathology), Oklahoma State University

Last full review/revision Oct 2015 | Content last modified Oct 2015
Topic Resources
Table
icon

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.

equation

equation

a As phosphorus, inorganic

Others also read
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID
Download the Manuals App iOS ANDROID

Test your knowledge

Anemia
Anemia may be regenerative, indicating the bone marrow is responding and attempting to replace red blood cells (RBCs), or nonregenerative, in which the bone marrow response is not able to meet the increased need for RBCs. Which of the following CBC findings is consistent with nonregenerative anemia? 
Become a Pro at using our website 

Also of Interest

Become a Pro at using our website 
TOP