Atomic Weight and Valence

Atomic Weight and Valence

Table B-33   -- Atomic Weight and Valence for Common Elements

ELEMENT	ATOMIC WEIGHT	VALENCE
Calcium	40	2
Sodium	23	1
Potassium	39	1
Chlorine	35.5	1
Magnesium	24.3	2
Phosphorus	31	*
Conversion of Common Elements from Milligrams (mg) to Milliequivalents (mEq)
To convert mg to mEq:
mEq =  mg  x valence              atomic weigh
To convert mg to mEq:
mg = mEq  x  atomic weigh           valence

*	The valence of phosphorus varies. For nutritional purposes, it isconvenient to express quantities in moles

 Martin: Fanaroff and Martin's Neonatal-Perinatal Medicine, 8th ed., Copyright © 2006 Mosby, An Imprint of Elsevier