Question

Practice: Use the Gizmo to create stable compounds from the combinations given below. After transferring electrons, arrange the atoms to demonstrate the attraction between positively charged ions and negatively charged ions. Click Check to check each compound. Write the chemical formula on a separate piece of paper and insert picture here. Ionic charges Chemical formula A. Lithium and fluorine: Li F B. Beryllium and oxygen: Be O C. Magnesium and fluorine: Mg F D. Aluminum and chlorine: Al Cl E. eryllium and nitrogen Be N

Answer 1

To create electrically neutral compounds using ionic bonds, the positive and negative ions must balance each other out. The compounds formed from the given elements are LiF, BeO,
`MgF_(2)`.
`AlCl_(3)`, and
`Be_(3) N_(2)`

To create stable compounds with ionic bonds, it's important to understand that the resulting compound must be electrically neutral. To write the chemical formula for a binary ionic compound, you need to know the charges on the ions and make sure the positive and negative charges balance out.

Here are the formulas for the given combinations:

• Lithium and fluorine: Lithium (Li) forms a +1 ion and fluorine (F) forms a -1 ion. Thus, the formula for lithium fluoride is LiF.
• Beryllium and oxygen: Beryllium (Be) forms a +2 ion and oxygen (O) forms a -2 ion. The formula for beryllium oxide is BeO.
• Magnesium and fluorine: Magnesium (Mg) forms a +2 ion and fluorine (F) forms a -1 ion. To balance the charges, two fluorine ions are needed for every magnesium ion. The formula for magnesium fluoride is
  `MgF_(2)`.
• Aluminum and chlorine: Aluminum (Al) forms a +3 ion and chlorine (Cl) forms a -1 ion. To balance, three chlorine ions are needed for every aluminum ion. The formula for aluminum chloride is
  `AlCl_(3)`.
• Beryllium and nitrogen: Beryllium (Be) forms a +2 ion and nitrogen (N) forms a -3 ion. A common multiple of these charges is six, so we need three beryllium ions for every two nitrogen ions. The formula for beryllium nitride is
  `Be_(3) N_(2)`.