Question

1)sodium + chlorine
formula: _______________
name: _________________

1. potassium + iodine

formula: _______________
name: _________________

1. magnesium + oxygen
2. calcium + sulfur

Explanation:

Step1: Analyze Sodium and Chlorine

Sodium (Na) has a charge of +1, Chlorine (Cl) has a charge of -1. To form a neutral compound, the ratio is 1:1. So the formula is $NaCl$. The name is Sodium Chloride.

Step2: Analyze Potassium and Iodine

Potassium (K) has a charge of +1, Iodine (I) has a charge of -1. The ratio is 1:1, formula is $KI$. Name is Potassium Iodide.

Step3: Analyze Magnesium and Oxygen

Magnesium (Mg) has a charge of +2, Oxygen (O) has a charge of -2. Ratio 1:1, formula $MgO$. Name Magnesium Oxide.

Step4: Analyze Calcium and Sulfur

Calcium (Ca) has a charge of +2, Sulfur (S) has a charge of -2. Ratio 1:1, formula $CaS$. Name Calcium Sulfide.

Answer:

1. Formula: $NaCl$, Name: Sodium Chloride
2. Formula: $KI$, Name: Potassium Iodide
3. Formula: $MgO$, Name: Magnesium Oxide
4. Formula: $CaS$, Name: Calcium Sulfide