Question

chemical bonds are the connections between atoms. there are three main types. in covalent bonds, atoms share electrons (like in carbon dioxide). in ionic bonds, electrons move between atoms (like in sodium chloride). in metallic bonds, found in metals, electrons are shared among many atoms. these bonds help atoms stay together and determine the properties of different substances. classify the following elements/compounds into the three main types of chemical bonds: covalent, ionic, or metallic. move each item to the correct column. covalent ionic metallic hydrogen chloride (hcl) potassium bromide (kbr) silver (ag) magnesium oxide (mgo) copper (cu) oxygen (o₂)

Explanation:

To solve this, we analyze each compound/element based on the bond types:

Step 1: Identify Covalent Bonds

Covalent bonds form when atoms share electrons, typically between non - metals.

• Hydrogen chloride (HCl): H and Cl are non - metals, and they share electrons, so it's covalent.
• Oxygen ($O_2$): Two oxygen atoms share electrons, so it's covalent.

Step 2: Identify Ionic Bonds

Ionic bonds form when electrons are transferred between a metal and a non - metal.

• Potassium bromide (KBr): K is a metal, Br is a non - metal, electrons are transferred, so it's ionic.
• Magnesium oxide (MgO): Mg is a metal, O is a non - metal, electrons are transferred, so it's ionic.

Step 3: Identify Metallic Bonds

Metallic bonds form in metals, where electrons are shared among many metal atoms.

• Silver (Ag): It is a metal, so it has metallic bonds.
• Copper (Cu): It is a metal, so it has metallic bonds.

Answer:

• Covalent: hydrogen chloride (HCl), oxygen ($O_2$)
• Ionic: potassium bromide (KBr), magnesium oxide (MgO)
• Metallic: silver (Ag), copper (Cu)