Understanding the Periodic Table

Who is credited with the creation of the first periodic table?

• Henry Moseley

• Dmitri Mendeleev

• John Dalton

• Marie Curie

What did Henry Moseley propose as the basis for organizing the periodic table?

• Chemical properties

• Atomic number

• Atomic weight

• Physical properties

What are the vertical columns in the periodic table called?

• Groups

• Rows

• Periods

• Blocks

What is the significance of the staircase on the periodic table?

• It separates metals from non-metals

• It indicates the most reactive elements

• It shows the transition metals

• It highlights noble gases

Which family of elements is known for having one electron in their outer shell?

• Alkaline earth metals

• Transition metals

• Alkali metals

• Halogens

What is a characteristic of transition metals?

• They have a full outer shell

• They are located in the S block

• They are highly reactive

• They are found in the D block

Which group is known as the halogens?

• Group 2

• Group 18

• Group 17

• Group 1

What is unique about noble gases?

• They are highly reactive

• They are metals

• They have a full outer shell

• They are found in the F block

What are rare earth metals also known as?

• Noble gases

• Representative elements

• Inner transition metals

• Transition metals

Which elements are considered representative elements?

• D block elements

• Noble gases

• S block and P block elements

• F block elements