Trends in the Table

1) Which family is called the halogens? The alkali metals? The alkaline earths?

2) Name three common properties of metals.

3) Name three common properties of non-metals.

4) Which loses electrons more easily, metals or non-metals?

5) Which is the better conductor of electricity, calcium or bromine?

6) How does the period of an atom compare to the number of energy levels it has?

7) Which atom has a larger radius, potassium or iron?

8) Which atom has a larger radius, potassium or sodium?

9) Which atom would require more energy to remove an electron, lithium or fluorine? Which atom makes positive ions, lithium or fluorine?

10) From which atom is it easier to remove an electron, lithium or potassium? Which is more reactive?

11) From which atom is it easier to remove an electron, fluorine or chlorine? Which is more reactive?

12) If you ignore the transition elements, how many different families are there? How does the number of the family compare to the number of valence electrons?

13) Which family (group) is the least reactive on the whole table? Why?

14) Which of these three is a semiconductor: molybdenum, krypton or silicon?

15) Which atom acts more like chlorine, fluorine or sulfur? Why?

16) What is an ion?

17) Does calcium lose electrons or gain electrons? Does it make positive or negative ions?

18) What is the charge on a fluorine ion?

19) What is the most likely charge on a chlorine ion?

20) Does helium gain or lose electrons?