the international union of pure and applied chemistry (iupac) has specific rules on how to name ionic and…
the international union of pure and applied chemistry (iupac) has specific rules on how to name ionic and covalent compounds. choose all of answers where the chemical formulas match the chemical names. (choose 3)\na calcium chloride and cacl₂\nb dihydrogen monoxide and h₂o\nc potassium nitride and k₂n\nd nitrogen trioxide and no₃\ne disulfur trioxide and s₃o₂\nf magnesium sulfide mg₂s₂
Answer
Explanation:
Step1: Analyze option A
Calcium has a +2 charge ($Ca^{2 + }$) and chloride has a - 1 charge ($Cl^{-}$). To balance the charges, we need 2 chloride ions for 1 calcium ion, so the formula is $CaCl_{2}$. This option is correct.
Step2: Analyze option B
Dihydrogen monoxide is the scientific name for water. Hydrogen has a +1 charge and oxygen has a - 2 charge. We need 2 hydrogen atoms for 1 oxygen atom, and the formula is $H_{2}O$. This option is correct.
Step3: Analyze option C
Potassium has a +1 charge ($K^{+}$) and nitride has a - 3 charge ($N^{3 - }$). To balance the charges, the formula should be $K_{3}N$, not $K_{2}N$. This option is incorrect.
Step4: Analyze option D
Nitrogen trioxide implies 1 nitrogen atom and 3 oxygen atoms. The correct formula should be $NO_{3}^{-}$ (nitrate ion) or $N_{2}O_{3}$ for the neutral molecule. Just $NO_{3}$ is not the correct formula for nitrogen trioxide. This option is incorrect.
Step5: Analyze option E
Disulfur trioxide means 2 sulfur atoms and 3 oxygen atoms, so the formula should be $S_{2}O_{3}$, not $S_{3}O_{2}$. This option is incorrect.
Step6: Analyze option F
Magnesium has a +2 charge ($Mg^{2+}$) and sulfide has a - 2 charge ($S^{2 - }$). The formula for magnesium sulfide is $MgS$, not $Mg_{2}S_{2}$. This option is incorrect.
Answer:
A. Calcium chloride and $CaCl_{2}$ B. Dihydrogen monoxide and $H_{2}O$