Questions: element #1 element #2 Forms ionic compound? empirical formula of ionic compound bromine potassium ○ yes no oxygen iodine ○ yes no oxygen potassium ○ yes no magnesium oxygen yes no

element #1 element #2 Forms ionic compound? empirical formula of ionic compound bromine potassium ○ yes no oxygen iodine ○ yes no oxygen potassium ○ yes no magnesium oxygen yes no
Transcript text: element #1 & element #2 & Forms ionic compound? & empirical formula of ionic compound \\ bromine & potassium & ○ yes & $\bigcirc$ no & $\square$ \\ oxygen & iodine & ○ yes & $\bigcirc$ no & $\square$ \\ oxygen & potassium & ○ yes & $\bigcirc$ no & $\square$ \\ magnesium & oxygen & $\bigcirc$ yes & $\bigcirc$ no & $\square$ \\
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Solution

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Solution Steps

Step 1: Identify if the elements form an ionic compound

To determine if the elements form an ionic compound, we need to check if one element is a metal and the other is a non-metal. Ionic compounds typically form between metals and non-metals.

Step 2: Analyze each pair of elements
  1. Bromine and Potassium: Potassium (K) is a metal, and Bromine (Br) is a non-metal. They can form an ionic compound.
  2. Oxygen and Iodine: Both Oxygen (O) and Iodine (I) are non-metals. They do not form an ionic compound.
  3. Oxygen and Potassium: Potassium (K) is a metal, and Oxygen (O) is a non-metal. They can form an ionic compound.
  4. Magnesium and Oxygen: Magnesium (Mg) is a metal, and Oxygen (O) is a non-metal. They can form an ionic compound.
Step 3: Determine the empirical formula of the ionic compounds
  1. Bromine and Potassium: Potassium (K) has a +1 charge, and Bromine (Br) has a -1 charge. The empirical formula is \( \text{KBr} \).
  2. Oxygen and Iodine: No ionic compound is formed.
  3. Oxygen and Potassium: Potassium (K) has a +1 charge, and Oxygen (O) has a -2 charge. The empirical formula is \( \text{K}_2\text{O} \).
  4. Magnesium and Oxygen: Magnesium (Mg) has a +2 charge, and Oxygen (O) has a -2 charge. The empirical formula is \( \text{MgO} \).

Final Answer

  1. Bromine and Potassium: \(\boxed{\text{KBr}}\)
  2. Oxygen and Iodine: \(\boxed{\text{No ionic compound}}\)
  3. Oxygen and Potassium: \(\boxed{\text{K}_2\text{O}}\)
  4. Magnesium and Oxygen: \(\boxed{\text{MgO}}\)
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