Ionic Compounds and Bonding Concepts

Dr. B explains the ionic bond formation in NaCl, highlighting the roles of sodium and chlorine. Sodium, a metal, and chlorine, a non-metal, form an ionic bond by transferring electrons. Sodium loses an electron, becoming positive, while chlorine gains an electron, becoming negative. This electron transfer results in stable octets for both elements, forming an ionic compound. The video also covers atomic numbers, energy levels, and the representation of ionic bonds using Lewis structures.

What type of bond is formed between sodium and chlorine in NaCl?

• Hydrogen bond

• Covalent bond

• Ionic bond

• Metallic bond

Which of the following elements is a metal?

• Oxygen

• Sodium

• Chlorine

• Nitrogen

What is the atomic number of sodium?

• 17

• 8

• 11

• 19

How many energy levels does chlorine have?

• Four

• One

• Two

• Three

How many valence electrons does sodium have before it forms an ionic bond?

• One

• Two

• Seven

• Eight

What happens to sodium's outer shell after it loses an electron?

• It remains unchanged

• It gains an electron

• It becomes empty

• It becomes full

What charge does chlorine acquire after gaining an electron?

• Negative

• Double positive

• Neutral

• Positive

What is the purpose of using brackets in a Lewis structure for ionic compounds?

• To display the atomic number

• To show the number of atoms

• To indicate the type of bond

• To represent the loss or gain of electrons

Why is NaCl considered an ionic compound?

• It is made of noble gases

• It is made of two non-metals

• It is made of a metal and a non-metal

• It is made of two metals

What is the main reason for the stability of the ionic bond in NaCl?

• The high atomic number of chlorine

• The presence of a double bond

• The attraction between positive and negative ions

• The sharing of electrons