Question

use the following information to answer the next two questions. a student lists four chemical names and their formula in their notebook. according to their teacher they only have one correct compound. writing chemical formulas and names. chemical formula: i so₂(g), ii cas(s), iii no(g), iv mgcl₂(s). chemical name: i sulfur oxide, ii carbon sulfide, iii nitrogen monoxide, iv magnesium dichloride. 8. which of the above compounds is named correctly? a. i b. ii c. iii d. iv

Explanation:

Step1: Analyze compound I

$SO_2$ is sulfur dioxide, not sulfur oxide. So I is incorrect.

Step2: Analyze compound II

$CaS$ is calcium sulfide, not carbon sulfide. So II is incorrect.

Step3: Analyze compound III

$NO$ is named nitrogen monoxide correctly.

Step4: Analyze compound IV

$MgCl_2$ is magnesium chloride, not magnesium dichloride. So IV is incorrect.

Answer:

c. III