Understanding the Periodic Table

Who is credited with organizing the periodic table as we know it today?

• Albert Einstein

• Dimitri Mendeleev

• Marie Curie

• Isaac Newton

Which group of elements is known for having similar reactivity and is located on the left side of the periodic table?

• Alkaline metals

• Halogens

• Noble gases

• Transition metals

What are the elements called that are located in the f-block of the periodic table?

• Lanthanides and Actinides

• Alkaline earth metals

• Halogens

• Noble gases

Where are most of the naturally occurring elements formed?

• In the ocean

• Within stars

• On the moon

• In laboratories

What primarily determines the reactivity of an element?

• The number of protons

• The atomic mass

• The valence electrons

• The number of neutrons