Naming Covalent Compounds

What is the name of N₂O₃

• Nitrogen trioxide

• Dinitrogen oxide

• Dinitrogen trioxide

• Nitrogen oxide

Answer explanation

N2O3 is named dinitrogen trioxide because it contains two nitrogen (N) atoms and three oxygen (O) atoms. The prefix 'di-' indicates two, and 'tri-' indicates three, making 'dinitrogen trioxide' the correct name.

Tags

NGSS.MS-PS1-1

What is the chemical formula for Tetrasulfur pentoxide?

• SO

• S₄O

• S₄O₅

• S₅O₄

Answer explanation

Tetrasulfur pentoxide consists of 4 sulfur (S) atoms and 5 oxygen (O) atoms, leading to the chemical formula S4O5. This matches the correct answer choice, S4O5.

Tags

NGSS.MS-PS1-1

What is the name of C₃Cl₈ ?

• Carbon octachloride

• Tricarbon octachloride

• Carbon trichloride

• Octacarbon trichloride

Answer explanation

C3Cl8 indicates three carbon atoms and eight chlorine atoms. The correct IUPAC name is Tricarbon octachloride, reflecting the number of carbon atoms (tri-) and the eight chlorine atoms (octa-).

Tags

NGSS.MS-PS1-1

What is the chemical formula for Nitrogen triiodide?

• NI

• N₃I

• NI₃

• None of these

Answer explanation

The chemical formula for Nitrogen triiodide is NI3, indicating one nitrogen atom and three iodine atoms. The other options do not correctly represent this compound.

Tags

NGSS.MS-PS1-1

What is the name of Br₆F₁₀ ?

• Bromium fluoride

• Hexabromine fluoride

• Bromium decafluoride

• none of the above

Answer explanation

The correct name for Br6F10 is not listed among the options. It is actually called hexabromine decafluoride, which is why 'none of the above' is the correct answer.

What is the name of CO

• Carbon oxide

• Carbon dioxide

• Carbon monoxide

• Carbon II oxide

Answer explanation

CO is the chemical formula for carbon monoxide, which is a colorless, odorless gas. The other options refer to different compounds: carbon dioxide (CO2) and carbon II oxide is another name for carbon monoxide.

What is the chemical formula for Fluorine trisulfide ?

• S₃F

• FS₃

• FS

• none of the above

Answer explanation

Fluorine trisulfide consists of one fluorine atom and three sulfur atoms. The correct chemical formula is FS₃, indicating one fluorine bonded to three sulfurs, making it the right choice among the options.

diphosphorus pentoxide

• P₂O₅

• PO₅

• P₅O₂

• P₂O₆

Answer explanation

Diphosphorus pentoxide is a chemical compound consisting of two phosphorus (P) atoms and five oxygen (O) atoms, represented as P2O5. This matches the correct choice, P2O5, while the other options do not accurately reflect this composition.

Tags

NGSS.MS-PS1-1

A covalent bond results from _________ valence electrons.

• exchanging

• gaining

• sharing

• trading

Answer explanation

A covalent bond results from sharing valence electrons between atoms. This sharing allows each atom to achieve a more stable electron configuration, which is essential for bond formation.

A compound that contains one nitrogen atom and two oxygen atoms is named

• oxygen nitride

• dioxygen nitride

• nitrogen dioxide

• nitrogen monoxide

Answer explanation

The compound with one nitrogen and two oxygen atoms is named nitrogen dioxide (NO2). The other options do not correctly represent this composition, as nitrogen dioxide specifically indicates one nitrogen and two oxygens.