4. Atoms and Elements

Which element is most likely to have similar chemical properties to beryllium (Be) based on its position in the periodic table?

Which of the following elements is classified as a halogen on the periodic table?

In the periodic table, strontium (Sr) is an alkaline earth metal. Which of the following elements is expected to be more reactive than strontium based on group trends?

Which element is expected to have similar chemical properties to sulfur because it is in the same group (chalcogens) on the periodic table?

In the periodic table, what are the horizontal rows called?

In the periodic table, what do we call the horizontal rows?

Which of the following elements is a halogen (Group 17) on the periodic table?

In the periodic table, what are the vertical columns called?

In the periodic table, which group of elements is generally the most reactive metals?

In the periodic table, Group 17 elements are the halogens. Which element is the most reactive (most active) halogen?

In the periodic table, what do the vertical columns represent?

Which periodic table group does argon (Ar) belong to?

In the periodic table, astatine (At) belongs to which element group?

Argon (Ar) belongs to which group of the periodic table?

Which element listed is an alkali metal and therefore the most reactive metal among the choices?