Q1. Choose the correct option.
Q2. Write down short answers of following questions.
Q3. Write detailed answers of the following questions. (Answer any 2) (2×5=10)
1. Periodicity and Modern Periodic Law
Define Periodicity. Explain the cause of periodicity and state the modern periodic law.
2. Chlorides of Period 3 Elements
What are neutral and acidic chlorides? Describe the reactions of chlorides of Period 3 elements with water and explain the process of hydration and hydrolysis.
3. Oxidation Numbers in Period 3
Define oxidation number and discuss how it varies among the 3rd period elements in their oxides and chlorides. Why do phosphorus and sulfur show more than one oxidation state?