Iodine Chemistry Concepts

The video explains the differences between iodine, iodide, and molecular iodine. It starts with iodine's atomic structure, highlighting its 53 protons and electrons. By adding an electron, iodine becomes iodide, gaining a negative charge. The video then describes how iodide can form an ionic bond with sodium, which loses an electron. Finally, it covers molecular iodine, formed by two iodine atoms sharing electrons in a covalent bond, resulting in a stable diatomic molecule. The video concludes with a recap of these concepts.

What is the atomic number of iodine?

• 56

• 55

• 54

• 53

How many valence electrons does a neutral iodine atom have?

• 5

• 6

• 7

• 8

What happens to iodine when it gains an extra electron?

• It becomes an iodide ion

• It becomes a molecule

• It becomes a neutral atom

• It becomes a positive ion

What charge does the iodide ion have?

• Double negative

• Neutral

• Negative

• Positive

Which element is mentioned as a donor of electrons to iodine?

• Chlorine

• Sodium

• Potassium

• Calcium

What type of bond is formed between sodium and iodide?

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

How is molecular iodine formed?

• By losing electrons

• By splitting atoms

• By gaining electrons

• By sharing electrons

What is another name for molecular iodine?

• Polyatomic iodine

• Diatomic iodine

• Triatomic iodine

• Monatomic iodine

What is the main difference between iodide and molecular iodine?

• Iodide is a molecule, molecular iodine is an ion

• Iodide is a gas, molecular iodine is a solid

• Iodide is charged, molecular iodine is neutral

• Iodide is neutral, molecular iodine is charged

What completes the octet in molecular iodine?

• Transferring electrons

• Sharing electrons

• Losing electrons

• Gaining electrons