Questions: Dinitrogen pentoxide Dinitrogen trisulfide Silicon tetrachloride Oxygen difluoride Phosphorus tribromide Iodine heptafluoride

Dinitrogen pentoxide Dinitrogen trisulfide Silicon tetrachloride Oxygen difluoride Phosphorus tribromide Iodine heptafluoride
Transcript text: Dinitrogen pentoxide & & Dinitrogen trisulfide & \\ Silicon tetrachloride & & Oxygen difluoride & \\ Phosphorus tribromide & & Iodine heptafluoride & \\
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Solution

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Solution Steps

Step 1: Understanding Molecular Compound Naming

Molecular compounds are named using prefixes to indicate the number of atoms of each element in the compound. The prefixes are as follows: mono- (1), di- (2), tri- (3), tetra- (4), penta- (5), hexa- (6), hepta- (7), octa- (8), nona- (9), and deca- (10).

Step 2: Writing Formulas for Given Compounds

Using the prefixes, we can determine the number of each type of atom in the compound and write the chemical formula.

  1. Dinitrogen pentoxide:

    • "Di-" indicates 2 nitrogen atoms.
    • "Penta-" indicates 5 oxygen atoms.
    • Formula: \( \text{N}_2\text{O}_5 \)

  2. Dinitrogen trisulfide:

    • "Di-" indicates 2 nitrogen atoms.
    • "Tri-" indicates 3 sulfur atoms.
    • Formula: \( \text{N}_2\text{S}_3 \)

  3. Silicon tetrachloride:

    • No prefix for silicon indicates 1 silicon atom.
    • "Tetra-" indicates 4 chlorine atoms.
    • Formula: \( \text{SiCl}_4 \)

  4. Oxygen difluoride:

    • No prefix for oxygen indicates 1 oxygen atom.
    • "Di-" indicates 2 fluorine atoms.
    • Formula: \( \text{OF}_2 \)

  5. Phosphorus tribromide:

    • No prefix for phosphorus indicates 1 phosphorus atom.
    • "Tri-" indicates 3 bromine atoms.
    • Formula: \( \text{PBr}_3 \)

  6. Iodine heptafluoride:

    • No prefix for iodine indicates 1 iodine atom.
    • "Hepta-" indicates 7 fluorine atoms.
    • Formula: \( \text{IF}_7 \)

Final Answer

  • Dinitrogen pentoxide: \(\boxed{\text{N}_2\text{O}_5}\)
  • Dinitrogen trisulfide: \(\boxed{\text{N}_2\text{S}_3}\)
  • Silicon tetrachloride: \(\boxed{\text{SiCl}_4}\)
  • Oxygen difluoride: \(\boxed{\text{OF}_2}\)
  • Phosphorus tribromide: \(\boxed{\text{PBr}_3}\)
  • Iodine heptafluoride: \(\boxed{\text{IF}_7}\)
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