Question

use the naming rules to type the names of each covalent compound below:
h2o ?
n2s4 ?
co ?
so3 ?

Explanation:

Step1: Name \( \ce{CO} \)

For covalent compounds, use prefixes (mono-, di-, tri-, etc.) based on subscripts. Carbon (C) and oxygen (O). Subscript of C is 1 (mono - omitted for first element), O is 1 (mono - becomes monoxide). So name is carbon monoxide.

Step2: Name \( \ce{H2O} \)

Hydrogen (H) and oxygen (O). Subscript of H is 2 (di -), O is 1 (mono - becomes oxide). So name is dihydrogen monoxide (or water, but using covalent naming rules: dihydrogen monoxide).

Step3: Name \( \ce{SO3} \)

Sulfur (S) and oxygen (O). Subscript of S is 1 (omitted), O is 3 (tri -). So name is sulfur trioxide.

Step4: Name \( \ce{N2S4} \)

Nitrogen (N) and sulfur (S). Subscript of N is 2 (di -), S is 4 (tetra -). So name is dinitrogen tetrasulfide.

Answer:

• \( \ce{CO} \): carbon monoxide
• \( \ce{H2O} \): dihydrogen monoxide (or water)
• \( \ce{SO3} \): sulfur trioxide
• \( \ce{N2S4} \): dinitrogen tetrasulfide