# Diarsenic Tetraiodide [As2I4] Molecular Weight Calculation

The molecular weight of Diarsenic tetraiodide [As2I4] is 657.46107.

Diarsenic tetraiodide [As2I4] is an inorganic compound of two elements: Arsenic (As)  and Iodine (I). The molecular weight of Diarsenic tetraiodide is 657.46107 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

# CALCULATION PROCEDURE: Diarsenic tetraiodide [As2I4] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Diarsenic tetraiodide molecule.
From the chemical formula, you will know different atoms and their number in a Diarsenic tetraiodide molecule. The chemical formula of Diarsenic tetraiodide is As2I4. From the chemical formula, you can find that one molecule of Diarsenic tetraiodide consists of two Arsenic (As) atoms and four Iodine (I) atoms.

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

Atomic weight of Arsenic (As): 74.921595 (Ref: Jlab-ele033, ciaaw-arsenic)
Atomic weight of Iodine (I): 126.90447 (Ref: Jlab-ele053, Ciaaw-iodine, Nist-53)

Step 3: Calculate the molecular weight of Diarsenic tetraiodide by adding the total weight of all atoms.

Number of Arsenic atoms in Diarsenic tetraiodide: 2
Atomic weight of Arsenic: 74.921595
Total weight of Arsenic atoms in Diarsenic tetraiodide: 74.921595 x 2 = 149.84319

Number of Iodine (I) atoms in Diarsenic tetraiodide: 4
Atomic weight of Iodine: 126.90447
Total weight of Iodine atoms in Diarsenic tetraiodide: 126.90447 x 4 = 507.61788

Step 4: Calculate the molecular weight of Diarsenic tetraiodide by adding up the total weight of all atoms.

Molecular weight of Diarsenic tetraiodide: 149.84319 (Arsenic) + 507.61788 (Iodine) = 657.46107

So the molecular weight of Diarsenic tetraiodide is 657.46107.

Diarsenic tetraiodide [As2I4] Molecular Weight Calculation

## REFERENCES:

• Jlab-ele033: https://education.jlab.org/itselemental/ele033.html
• ciaaw-arsenic: https://www.ciaaw.org/arsenic.htm
• Jlab-ele053: https://education.jlab.org/itselemental/ele053.html
• Ciaaw-iodine: https://www.ciaaw.org/iodine.htm
• Nist-53: https://physics.nist.gov/cgi-bin/Elements/elInfo.pl?element=53

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