Physical Properties of Period 3 Elements

Question 1

Bonding between Na, Mg, Al

Answer 1

e.f.a between ___ ions and sea of delocalised electrons

Question 2

Bonding between silicon

Answer 2

e.f.a between nucleus of Si atoms and shared paired of electrons

Question 3

Bondings between Phosphorus, sulfur and chlorine

Answer 3

1. e.f.a between nucleus of ___ atoms and shared pairs of electrons
2. IDID between ____ molecules

Question 4

Types of bonds broken during melting and boiling

Answer 4

Na, Mg, Al -> e.f.a between ___ ions and sea of delocalised electrons

Silicon -> e.f.a between nucleus of Si atoms and shared paired of electrons

P4, S8, Cl2 -> IDID between ___ molecules

Question 5

What are the points to mention while explaining the shape of the graph?

Answer 5

1. Why S8 has the highest?
2. Metallic bonding in Mg and Al > IDID between P4, S8 and Cl2
3. Metallic bonding in Na
   - > IDID
   - < S8

Question 6

What are the points to take note while sketching the graph?

Answer 6

1. Al is slightly higher than Mg
2. Si is the highest
3. P4 slightly lower than Na
4. S8 slightly higher than Na; < Mg
5. Cl2 < P4