Periodicity and chemical bonding

Question

Assignment:

Question 1. How does ionization energy change as one proceeds

a) across the periodic table in a horizontal row

b) down the periodic table in a vertical group

Give an explanation for each answer.

Question 2. Arrange the following atoms or ions in order of increasing radius:

Cl, S^2-, K, K⁺, O

Give an explanation for the position of S^2- in relation to the atom or ion that comes just before and just after it.

Question 3. What is the relationship between first ionization energies and metallic and non-metallic properties?

Question 4. Identify two repulsive forces and two attractive forces that influences the formation of chemical bonds between two atoms.

Question 5. Which of these bonds is most polar and which is least: S-O, Cl-CL, or Cl-O? Justify the arrangement.

Question 6. a) What is meant by octet structure?

b)What evidence indicates that octet structures might be more stable than others?

Question 7. What is meant by co-ordinate covalent bond?