C2.2 Chemical Families

1. What is the name of the energy released as an ion is formed in halogen?

2. Which of the following is not a noble gas?

3. Explain why there is an increase in reactivity as you go down the alkali metal group from Lithium to Potassium

4. The elements in group 8 of the periodic table are called

5. The atomic radius of Halogen atom is less than the ionic radius of halogen ion e.g. Chlorine atom and Chlorine ion True or False

6. How many alkali metal ions is needed to combine one oxide ion?

7. Explain why atomic radii of the alkali metals increase down the group

8. Which of the following doesn’t belong to alkaline earth metals?

9. Mention the chemical properties of alkali metals

10. Which of the following statement describes the characteristics of alkaline earth metals?

11. Does the ionization energy decrease as you go down the group of alkali metals?

12. Mention the physical properties of Halogens

13. What is the name of the minimum energy required to remove an electron from the outermost energy level of an atom in the gaseous state?

14. Mention the examples of Halogens

15. Mention the physical properties of Alkali metals

16. Mention the uses of noble gas

17. Mention the characteristics of Halogens

18. Explain why the ionization energy decreases as you go down the group of alkali metals

19. Mention the chemical properties of Halogens

20. Mention the uses of Alkaline earth metals and their compounds

21. Does the electron affinity decrease as the size of the atoms increases in Halogen hence the reactivity decreases down the group? {Fluorine reacts more than iodine} True or False

22. In Alkali metals, the electrons in the outermost energy level move randomly throughout the metallic structure and are said to be delocalized?

23. Explain why Halogen melting and boiling point level increase as you go down the group? {Iodine has high melting and boiling point than Fluorine}

24. Why is the atomic radius of halogen atom less than the ionic radius of halogen ion?

25. Mention the physical properties of Alkaline earth metals

26. The elements in Group 2 of the periodic table are called?

27. Mention the uses of alkali metals and their compounds

28. Mention the Electrical physical properties of elements in period 3

29. Define Atomic Radius?

30. Mention the physical properties of noble gases

31. The elements in group 1 of the periodic table are called Alkali metals True or False

32. Non-metals in Group 7 are called

33. Which among the following element is not among Period 3?

34. Mention the characteristics of Noble gases

35. Due to their reactivity alkali metals are not found as free electrons rather as combined elements

36. Which of the following is not an example of alkali metal?

37. Explain why are alkali metals are good conductors of heat and electricity

38. Explain why Halogens cannot conduct heat and electricity

39. Explain why the melting and boiling points decrease down the group of alkali metals

40. Explain why is the ionic radius of an alkali metal is less than its atomic radius

41. Mention the chemical properties of Alkaline earth metals

42. Mention the uses of Halogens and their compounds

43. Mention the physical properties of elements in period 3