Question 3 Which of the following distinguishes calcium nitrite and calcium nitride? Calcium nitride has one iodine atom Calcium nitrite has two iodine atoms Calcium nitride has one oxygen atom Calcium nitrite has two oxygen atoms Points 3

## Step 1:Understand the difference between nitride and nitrite. Nitride ( ) is a compound formed with nitrogen, while nitrite ( ) is a compound that includes nitrogen and oxygen.## Step 2:Identify the chemical formula for calcium nitride and calcium nitrite:- Calcium nitride is .- Calcium nitrite is \(\text{Ca}(\text{NO}_2)_2\).## Step 3:Analyze the components of each compound:- Calcium nitride ( ) has no oxygen atoms.- Calcium nitrite (\(\text{Ca}(\text{NO}_2)_2\)) contains two oxygen atoms in each ion, for a total of four oxygen atoms per formula unit.## Step 4:Check each option to find the correct distinguishing factor:- "Calcium nitride has one iodine atom" - Incorrect, as calcium nitride contains nitrogen, not iodine.- "Calcium nitrite has two iodine atoms" - Incorrect, as calcium nitrite contains nitrogen and oxygen, not iodine.- "Calcium nitride has one oxygen atom" - Incorrect, as calcium nitride does not contain oxygen.- "Calcium nitrite has two oxygen atoms" - Incorrect in the specifics of the amount, but correct in the presence of oxygen.## Step 5:Identify the accurate distinguishing factor:- The correct option should recognize that calcium nitrite contains oxygen atoms, while calcium nitride does not.#