CLASS - XI CHEMISTRY (Classification of Elements and Periodicity in Properties) work sheet-4

Topic: - Chemical Properties of element

1. Define valency.

2. How does valency vary in a group and period in the periodic table?

3. What is the valency of noble gases?

4. How do metals react in a period?

5. How do metals react in a group?

6. How does the reactivity of non–metals changes in a period and group?

7. Give the properties of the oxides in a particular period.

8. What is an amphoteric oxide?

9. Define a neutral oxide.

10. Why does lithium form covalent bond unlike other alkali which forms ionic bond?