C13 The Periodic Table

1. Where in the Periodic Table is the metallic character of the elements greatest?

• A

• B

• C

• D

2. Argon, Ar, has a higher relative atomic mass than potassium, K, but appears before it in the Periodic Table.

3. Why is argon listed before potassium in the Periodic Table?

• A. Argon has fewer neutrons than potassium.

• B. Argon has fewer protons than potassium.

• C. Argon has more neutrons than potassium.

• D. Argon has more protons than potassium.

3. J and K are two elements from the same period in the Periodic Table. The table gives some properties of J and K. Which statement about J and K is correct?

• A. J forms an acidic oxide.

• B. J is found to the left of K in the Periodic Table.

• C. K forms positive ions when it reacts.

• D. K is more metallic than J.

4. Rubidium is a Group I metal. Which statement about rubidium is not correct?

• 4. A It has a higher melting point than lithium.

• 4. B It has one electron in its outer shell.

• 4. C It reacts vigorously with water.

• 4. D It reacts with chlorine to form rubidium chloride, RbCl .

5. Which statement about the elements in Group I is correct?

• 5. A. Hydrogen is evolved when they react with water.

• 5. B. Ions of Group I elements have a –1 charge.

• 5. C. Sodium is more reactive than potassium.

• 5. D. Solid sodium is a poor electrical conductor.

In the outline of the Periodic Table below, some elements are shown as numbers.

Which two numbers are metals in the same period?

• A. 1 and 2

• B. 1 and 7

• C. 3 and 5

• D. 5 and 6

Element X is a non-metal.

In which position of the Periodic Table could element X be found?

• A. at the bottom of Group I

• B. at the top of Group 0

• C. at the top of Group II

• D. in the transition elements

7. The diagram shows a simplified form of the Periodic Table:

8. Which elements will form an acidic oxide?

• 7. A. W and Z

• 7. B. W only

• 7. C. X and Y only

• 7. D. Y only

8. The table shows the symbols of three metals with names that begin with the letter C.

Which row correctly shows the melting point of the metals?

• A

• B

• C

• D

9. W, X, Y and Z are elements in the same period in the Periodic Table. W and Y are metals. X and Z are non-metals. Which shows the correct order of these elements across the period?

• A

• B

• C

• D