nomenclature worksheet 3 - covalent (molecular) compounds
part a: name the following covalent compounds.
1. co
2. co₂
3. n₂o₃
4. n₂
5. np
6. scl₂
7. p₂o₅
8. nbr₃
9. cl₄
10. ccl₄
11. pf₅
12. pf₃
13. os
14. sef₂
15. tebr₂
16. p₂s₅
17. c₂n₄
18. f₂
19. ch₄
20. ph₃
part b: write the chemical formula for each of the following compounds.
1. carbon tetrafluoride
2. silicon dioxide
3. dinitrogen trisulfide
4. phosphorus mononitride
5. hydrogen gas
6. carbon disulfide
7. nitrogen trichloride
8. silicon tetrabromide
9. carbon dioxide
10. nitrogen trifluoride
11. boron trisulfide
12. sulphur trioxide
13. selenium tetrafluoride
14. diphosphorus pentasulfide
15. xenon tetrafluoride
16. sulfur dibromide
17. carbon tetrachloride
18. oxygen gas
19. fluorine gas
20. dinitrogen tetroxide

Question

Accepted Answer

### Part A: Name the following covalent compounds (corrected/verified)
# Brief Explanations:
Covalent compound naming uses prefixes for atom counts (1=mono, 2=di, 3=tri, 4=tetra, 5=penta, 6=hexa, etc.), with "mono-" omitted for the first element. The second element ends in "-ide".
# Answer:
1. CO: Carbon Monoxide
2. CO₂: Carbon Dioxide
3. N₂O₃: Dinitrogen Trioxide
4. N₂: Dinitrogen
5. NP: Nitrogen Monophosphide
6. SCl₂: Sulfur Dichloride
7. P₂O₅: Diphosphorus Pentoxide
8. NBr₃: Nitrogen Tribromide
9. Cl₄: Tetrachlorine (Note: This is a rare species; standard naming applies)
10. CCl₄: Carbon Tetrachloride
11. PF₅: Phosphorus Pentafluoride
12. PF₃: Phosphorus Trifluoride
13. OS: Oxygen Sulfide (or Sulfur Monoxide, but OS is oxygen-first)
14. SeF₂: Selenium Difluoride
15. TeBr₂: Tellurium Dibromide
16. P₂S₅: Diphosphorus Pentasulfide
17. C₃N₄: Tricarbon Tetranitride
18. F₂: Difluorine
19. CH₄: Methane (systematic: Carbon Tetrahydride, but methane is the common name)
20. PH₃: Phosphine (systematic: Phosphorus Trihydride, but phosphine is the common name)

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### Part B: Write the Chemical Formula for each of the following compounds
# Brief Explanations:
Convert prefixes to subscripts: use the prefix number as the subscript for the corresponding element. Omit subscript "1" when no prefix is given for the first element.
# Answer:
1. carbon tetrafluoride: $	ext{CF}_4$
2. silicon dioxide: $	ext{SiO}_2$
3. dinitrogen trisulfide: $	ext{N}_2	ext{S}_3$
4. phosphorus mononitride: $	ext{PN}$
5. hydrogen gas: $	ext{H}_2$
6. carbon disulfide: $	ext{CS}_2$
7. nitrogen trichloride: $	ext{NCl}_3$
8. silicon tetrabromide: $	ext{SiBr}_4$
9. carbon dioxide: $	ext{CO}_2$
10. nitrogen trifluoride: $	ext{NF}_3$
11. boron trisulfide: $	ext{B}_2	ext{S}_3$
12. sulphur trioxide: $	ext{SO}_3$
13. selenium tetrafluoride: $	ext{SeF}_4$
14. diphosphorus pentasulfide: $	ext{P}_2	ext{S}_5$
15. xenon tetrafluoride: $	ext{XeF}_4$
16. sulfur dibromide: $	ext{SBr}_2$
17. carbon tetrachloride: $	ext{CCl}_4$
18. oxygen gas: $	ext{O}_2$
19. fluorine gas: $	ext{F}_2$
20. dinitrogen tetroxide: $	ext{N}_2	ext{O}_4$

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QUESTION IMAGE

Question

Explanation:

Part A: Name the following covalent compounds (corrected/verified)

Answer:

Part B: Write the Chemical Formula for each of the following compounds