Periodic Table

2. Which group contains elements with a total of 4 valence electrons?

1. Alkali Metals2. Group 143. Any transition element4. Noble Gases5. Any element in period 4

3. Which of the following are both halogens that are gases at STP?

1. Chlorine and bromine2. Krypton and argon3. Nitrogen and oxygen4. Chlorine and fluorine5. Fluorine and neon

Refer to the following periodic table to answer questions 5 thru 7.

5. Which element has properties of both metals and nonmetals?

1. A2. B3. C4. D5. E

6. Which element is the most reactive metal?

1. A2. B3. C4. D5. E

7. Which element exists as a monatomic gas at STP?

1. A2. B3. C4. D5. E

8. At STP, potassium is classified as a(n):

1. Solid halogen2. Liquid metal3. Solid metal4. Liquid metalloid5. Transition element

9. Which element in Group 17 is the most active nonmetal?

1. I2. Cl3. Br4. F5. At

10. At which location on the periodic table would the most active metallic element be found?

1. In Group 1 at the bottom2. In Group 17 at the bottom3. In Group 1 at the top4. In group 17 at the top5. Any of the Rare Earth Elements

11. As the elements in Group 1 are considered in order of increasing atomic number, the atomic radius of each successive elements:

1. Increases2. Decreases3. Remains the same4. Cannot be predicted

12. As the elements in Period 2 are considered in succession from left to right, there is a general increase in:

1. Boiling point2. Radius3. Reactivity4. Metallic character5. Nonmetallic character

13. Which element is classified as a chalcogen AND a metalloid?

1. P2. Te3. Si4. At5. B

14. The element found in Group 13 and Period 2 is:

1. Al2. Mg3. Be4. B5. Zn

15. Compared to a neon atom, a helium atom has a:

1. Equal number of electrons2. Larger atomic number3. Smaller radius4. Greater number of protons5. Greater atomic mass

16. Which compound contains an alkali metal and a halogen?

1. CaCl2

2. Rb2S

3. RbCl4. CaS5. CuS

17. What group in the Periodic Table contains the elements of the alkaline earth family?

1. 12. 23. 3-124. 145. 15

18. Which of the following periods contain transition elements?

1. 12. 23. 34. 45. None of the above

19. Which atom has the smallest atomic radius?

1. Be2. C3. Li4. F5. Rn

20. Which Period 3 element has the least metallic character?

1. Al2. Mg3. Si4. Na5. Sc

21. Which two elements have chemical properties that are most similar?

1. C and N2. K and Ca3. Cl and Ar4. Li and Na5. 1, 2 and 3 are ALL

correct b/c each of these sets of elements are in the same period

22. Based on the Periodic Table of Elements, which Group 2 element is most active?

1. Be2. Ca3. Ba4. Sr5. Ra

23. Which element has properties of electrical conductivity and exists as a liquid at STP?

1. Hg2. I3. Br4. Rn5. Fr

24. Which element is an active nonmetal?

1. Chromium2. Zinc3. Neon4. Oxygen5. Lithium

25. The properties of silicon are characteristic of:

1. Neither a metal nor a nonmetal2. A nonmetal, only3. A metal, only4. Both a metal and a nonmetal5. All the other elements in Period 3

26. Which of the following is the atomic number of a rare earth element?

1. 582. 453. 204. 185. 86

27. The elements in period 3 all have the same number of:

1. Protons2. Main energy levels3. Valence electrons4. Neutrons5. Neutrons and electrons

28. In the modern Periodic Table, the elements are arranged according to:

1. Atomic mass2. Mass number3. Atomic number 4. Number of neutrons5. All of the above

29. Which element’s atoms have a larger atomic radius than atoms of silicon?

1. Sodium2. Chlorine3. Sulfur4. Carbon5. Oxygen

30. Which group contains elements with the greatest variation in chemical properties?

1. Be, Mg, Ca2. Li, Be, B3. Li, Na, K4. B, Al, Ga5. Ar, Kr, Xe

31. Which element forms a diatomic molecule?

1. Carbon2. Bromine3. Helium4. Iron5. Sodium

32. Alkali metals, alkaline earth metals, and halogens are found respectively in Groups:

1. 1, 2 and 142. 1, 2 and 173. 2, 13 and 174. 1, 2, and 185. 16, 17, and 18

33. How many noble gases are found in Period 1 of the Periodic Table?

1. 02. 13. 24. 35. 4

34. Which element in Group 16 would most likely have the best electrical conductivity?

1. O2. S3. Se4. Te5. Po

35. In the Periodic Table of the Elements, all the elements within Group 16 have the same number of:

1. Main energy levels2. Protons3. Valence electrons4. Neutrons5. All of the above

36. The atomic mass unit (amu) was based on an atom of:

1. Nitrogen-142. Oxygen3. Tritium4. Carbon-125. None of the above

37. An atom contains 20 protons, 20 neutrons, and 20 electrons. The atomic number of this element is:

1. 202. 403. 604. 105. None of the above

38. Chalcogens have ___ valence electrons.

1. 142. 33. 64. 105. 16

39. Titanium is found in the ___-block in the Periodic Table.

1. s2. p3. d4. f5. g

40. s-block elements have from ___ to ___ valence electrons.

1. 13-182. 1-23. 3-124. 3-85. 10-20

41. Which of the following represents a valence electron in the p-block?

1. A2. B3. C4. D5. None of the above

42. What is the mass number of an element with 26 protons, 15 nuetrons,and 26 electrons?

1. 262. 153. 414. 525. 11

43. An element has a mass number of 84 and 35 electrons. What is the atomic number of this element?

1. 1192. 353. 844. 1685. 70

44. The following ‘onion model’ shows that this atom and is in period ___ Group ___ of the Periodic Table.

1. 5, 32. 3, 43. 4, 34. 3, 145. 14, 5