Which category does the element Helium belong to?

• Alkali Metals

• Alkaline Earth Metals

• Noble gas

• Actinide

Which of the following elements is a Lanthanide?

• Eu (Europium)

• Hg (Mercury)

• Fe (Iron)

• Ne (Neon)

What is the atomic weight of Carbon as indicated in the periodic table?

• 12.011

• 14.007

• 15.999

• 1.008

Which group of elements is colored green in the provided periodic table?

• Alkali Metals

• Metalloids

• Post-Transition Metals

• Polyatomic nonmetals

What is the charge of a proton?

• Negative

• Neutral

• Positive

• No charge

Where are electrons primarily located in an atom?

• In the nucleus

• Outside the nucleus

• In the proton

• In the neutron

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• Variable

What is the core of the atom called?

• Electron cloud

• Neutron

• Nucleus

• Proton

What do electrons move around in an atom?

• Proton cloud

• Neutron cloud

• Electron cloud

• Nucleus

What is the atom's structure a result of?

• The repulsion between protons and electrons

• The attraction between neutrons and electrons

• The attraction between protons and electrons

• The repulsion between neutrons and protons