Understanding the Periodic Table

Which of the following is a trend observed in alkaline metals as you move down the group?

• Softness increases

• Melting and boiling points increase

• Reactivity decreases

• Density decreases

What is a key difference between alkaline earth metals and alkaline metals?

• Alkaline earth metals are gases at room temperature

• Alkaline earth metals are more reactive

• Alkaline earth metals have one electron in their outer shell

• Alkaline earth metals have two electrons in their outer shell

How does the reactivity of halogens change as you move down the group?

• It fluctuates

• It remains constant

• It decreases

• It increases

Why are noble gases considered unreactive?

• They have incomplete outer electron shells

• They have full outer electron shells

• They are located in the center of the periodic table

• They have low melting points

Which property is NOT typical of transition metals?

• Low melting points

• High density

• Formation of colored compounds

• Variable valencies