Name each of the following compounds.
NBr3
S2Cl2
Br3O8
SF6
P4O10
I2O5
B2Cl4
XeF6
SiS2
The correct answer and explanation is :
Here are the names of the given compounds:
- NBr₃ – Nitrogen tribromide
- S₂Cl₂ – Disulfur dichloride
- Br₃O₈ – Tribromine octoxide
- SF₆ – Sulfur hexafluoride
- P₄O₁₀ – Tetraphosphorus decaoxide
- I₂O₅ – Diiodine pentoxide
- B₂Cl₄ – Diboron tetrachloride
- XeF₆ – Xenon hexafluoride
- SiS₂ – Silicon disulfide
Explanation
These names follow the systematic naming rules for molecular (covalent) compounds, which consist of nonmetals bonded together via covalent bonds. The naming rules are as follows:
- The first element keeps its name, while the second element’s name is modified to end in “-ide.”
- Prefixes indicate the number of atoms of each element in the compound. The prefixes are:
- Mono- (1) (usually omitted for the first element)
- Di- (2)
- Tri- (3)
- Tetra- (4)
- Penta- (5)
- Hexa- (6)
- Hepta- (7)
- Octa- (8)
- Nona- (9)
- Deca- (10)
Application of Rules
- Nitrogen tribromide (NBr₃): “Tri-” means three bromine atoms.
- Disulfur dichloride (S₂Cl₂): “Di-” means two sulfur and two chlorine atoms.
- Tribromine octoxide (Br₃O₈): “Tri-” for three bromine and “Octa-” for eight oxygen atoms.
- Sulfur hexafluoride (SF₆): “Hexa-” for six fluorine atoms.
- Tetraphosphorus decaoxide (P₄O₁₀): “Tetra-” for four phosphorus and “Deca-” for ten oxygen atoms.
- Diiodine pentoxide (I₂O₅): “Di-” for two iodine and “Penta-” for five oxygen atoms.
- Diboron tetrachloride (B₂Cl₄): “Di-” for two boron and “Tetra-” for four chlorine atoms.
- Xenon hexafluoride (XeF₆): “Hexa-” for six fluorine atoms.
- Silicon disulfide (SiS₂): “Di-” for two sulfur atoms.
This method ensures the compounds are named consistently and unambiguously.