# Aluminium Bromide [AlBr3] Molecular Weight Calculation

The molecular weight of Aluminium bromide [AlBr3] is 266.6935384.

Aluminium bromide [AlBr3] is an inorganic compound of two elements: Aluminium and Bromine. The molecular weight of Aluminium bromide [AlBr3] is 266.6935384 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

# CALCULATION PROCEDURE: Aluminium Bromide [AlBr3] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in an Aluminium bromide molecule.
From the chemical formula, you will know different atoms and their number in an Aluminium bromide molecule. The chemical formula of Aluminium bromide is AlBr3. From the chemical formula, you can find that one molecule of Aluminium bromide consists of one Aluminium (Al) atom and three Bromine (Br) atoms.

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

Atomic weight of Aluminium (Al): 26.9815384 (Ref: ciaaw-aluminium)
Atomic weight of Bromine (Br): 79.904 (Ref: Jlab-ele035)

Step 3: Calculate the molecular weight of Aluminium bromide by adding the total weight of all atoms.

Number of Aluminium (Al) atoms in Aluminium bromide: 1
Atomic weight of Aluminium: 26.9815384
Total weight of Aluminium atoms in Aluminium bromide: 26.9815384 x 1 = 26.9815384

Number of Bromine (Br) atoms in Aluminium bromide: 3
Atomic weight of Bromine: 79.904
Total weight of Bromine atoms in Aluminium bromide: 79.904 x 3 = 239.712

Step 4: Calculate the molecular weight of Aluminium bromide by adding up the total weight of all atoms.

Molecular weight of Aluminium bromide: 26.9815384 (Aluminium) + 239.712 (Bromine) = 266.6935384

So the molecular weight of Aluminium bromide is 266.6935384.

Aluminium Bromide [AlBr3] Molecular Weight Calculation

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