Multiple Choice
What is the correct name for the molecular compound N_2O_5?
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3. Chemical Reactions
Naming Molecular Compounds
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Which of the following is the correct chemical formula for sulfur tetraiodide?
A
SI2
B
S2I4
C
SI4
D
S4I
Verified step by step guidance1
Understand the naming convention: 'sulfur tetraiodide' indicates a compound made of sulfur (S) and iodine (I) atoms, where 'tetra-' means four iodine atoms are bonded to one sulfur atom.
Identify the prefix 'tetra-' which corresponds to the number 4, meaning there are four iodine atoms in the compound.
Since there is no prefix before sulfur, it implies there is only one sulfur atom in the formula.
Combine the elements with their respective quantities: one sulfur atom (S) and four iodine atoms (I), resulting in the formula \(S I_4\).
Verify that the formula matches the name: sulfur tetraiodide corresponds to \(S I_4\), which is the correct chemical formula.
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