Understanding Covalent Bonding

What is a covalent bond?

• A bond formed by the transfer of electrons between atoms.

• A bond formed by the sharing of electrons between atoms.

• A bond formed by the sharing of protons between atoms.

• A bond formed by the sharing of neutrons between atoms.

Which type of elements typically form covalent bonds?

• Metallic elements

• Non-metallic elements

• Noble gases

• Transition metals

How many pairs of electrons are shared in a double covalent bond?

• One pair

• Two pairs

• Three pairs

• Four pairs

Which of the following is a diatomic element?

• Helium (He)

• Neon (Ne)

• Oxygen (O₂)

• Argon (Ar)

What is the representation of a triple covalent bond using lines?

• One line (—)

• Two lines (=)

• Three lines (≡)

• Four lines (≣)

Which of the following molecules contains a single covalent bond?

• O₂

• N₂

• H₂

• CO₂

What is a molecule?

• A single atom

• A particle consisting of two or more atoms chemically bonded together

• A group of ions

• A mixture of different elements

Which of the following is NOT a diatomic element?

• Hydrogen (H₂)

• Nitrogen (N₂)

• Carbon (C)

• Chlorine (Cl₂)

What is the term for pairs of outer electrons not involved in bonding?

• Bonding pairs

• Lone pairs

• Shared pairs

• Free pairs

Which of the following elements forms a molecule with a triple covalent bond?

• Oxygen (O₂)

• Nitrogen (N₂)

• Hydrogen (H₂)

• Chlorine (Cl₂)