# Radium Chloride (RaCl2) Molecular Weight Calculation

The molecular weight of Radium chloride (RaCl2) is 296.9054. To calculate molecular weight of any compound, the first step is to know the constituent elements (atoms) and their number in that particular compound. Then calculate the total atomic weight of each element by multiplying its atomic weight by its number. The sum of total atomic weight of all constituent elements will be the molecular weight of the compound. Note that the value of atomic weight may differ from different sources.

# CALCULATION PROCEDURE

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Radium chloride molecule.
From the chemical formula, you will know different atoms and their number in a Radium chloride molecule. Chemical formula of Radium chloride is RaCl2. From the chemical formula of Radium chloride, it is easy to find out that there are one Radium (Ra) atom and two Chlorine (Cl) atoms in a molecule of Radium chloride.

Step 2: Find out atomic weights of each atom (from periodic table).

Atomic weight of chlorine (Cl) : 35.4527 (Ref: Pubchem-Chlorine, jlab-ele017)

Step 3: Calculate the molecular weight of Radium chloride by adding the total weight of all atoms.

Total weight of Radium atoms in Radium chloride: 226 x 1 = 226

Number of Chlorine atoms in Radium chloride: 2
Atomic weight of Chlorine: 35.4527
Total weight of Chlorine atoms in Radium chloride: 35.4527 x 2 = 70.9054

Step 4: Calculate the molecular weight of Radium chloride by adding up the total weight of all atoms. 