Valence Electrons Quiz

Which group would have 3 valence electrons on their outmost shell?

The valence electrons are determined by the ​ (a)   which are ​ (b)   on the periodic table.

• group
• columns
• rows
• period
• hydrogen
• protons
• shells

Where on a Bohr model are valence electrons found?

• In the nucleus

• In the innermost orbit

• In the outermost orbit

• Outside the atom

What is the octet rule?

• Atoms lose electrons to fill their valence shells

• Atoms gain or share electrons to have eight electrons in their valence shell

• Atoms always have eight protons

• Atoms split to form eight new atoms

What is a valence electron?

• An electron involved in the formation of a chemical bond

• An electron in the nucleus

• An electron that does not participate in bonding

• A positively charged electron

All elements in a group/column on the periodic table have the same number of what?

• Protons

• Neutrons

• Valence electrons

• Atomic mass

How many valence electrons does Sodium (Na) have, and how many more does it need to reach a full octet?

• 1 valence electron, needs 7 more

• 2 valence electrons, needs 6 more

• 3 valence electrons, needs 5 more

• 8 valence electrons, needs 0 more

What is the total number of valence electrons needed by Chlorine (Cl) to reach a full octet?

• Needs 1 more

• Needs 2 more

• Needs 3 more

• Needs 7 more

Which group should an unknown element with 1 valence electron belong to?

• Alkali metals

• Alkaline earth metals

• Halogens

• Noble gases

If an unknown element has 7 valence electrons, it most likely belongs to which group?

• Alkali metals

• Alkaline earth metals

• Halogens

• Noble gases