Binary 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.

What is the chemical formula for Tetrasulfur pentoxide?

• SO

• S₄O

• S₄O₅

• S₅O₄

Answer explanation

Tetrasulfur pentoxide contains four sulfur (S) atoms and five oxygen (O) atoms, leading to the chemical formula S4O5. This matches the correct answer choice, S4O5.

What is the name of C₃Cl₈ ?

• Carbon octachloride
• Tricarbon octachloride
• Carbon trichloride
• Octacarbon trichloride

What is the chemical formula for Nitrogen triiodide?

• NI
• N₃I
• NI₃
• None of these

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, a colorless, odorless gas. It is distinct from carbon dioxide (CO2) and carbon II oxide, which are different compounds. Therefore, the correct answer is carbon monoxide.

What is the chemical formula for CP ?

• Carbon phosphide

• Monocarbon phosphide

• Carbon monophosphide

• none of the above

Answer explanation

The chemical formula CP stands for Carbon monophosphide, which indicates one carbon atom and one phosphorus atom. The term 'monophosphide' specifies the presence of a single phosphorus atom, making this the correct choice.

The chemical formula of dinitrogen textroxide is

• Ni₂O₄

• NiO

• N₂O₄

• NiO₂

Answer explanation

Dinitrogen tetroxide is represented by the chemical formula N₂O₄, indicating it contains two nitrogen (N) atoms and four oxygen (O) atoms. The other options do not correspond to this compound.

The chemical formula of tetraphosphorus heptaoxide is

• F₄O₁₀

• P₄O₇

• PO

• P₁₀O₄

Answer explanation

Tetraphosphorus heptaoxide consists of four phosphorus (P) atoms and seven oxygen (O) atoms, which is correctly represented by the formula P₄O₇. The other options do not match this composition.

What is the formula for Hexaboron Monosilicide

• B₆Si
• BSi
• BSi₆
• B₆Si₆

What is the OFFICIAL name for H₂O

• Hydrogen Oxide

• Oxygen Dinitride

• Agua

• Dihydrogen Monoxide

Answer explanation

The official name for H2O is Dihydrogen Monoxide, which reflects its chemical composition of two hydrogen atoms and one oxygen atom. Other options like Hydrogen Oxide are informal, while Agua is the Spanish term for water.