Properties and Classification of Elements

Fill in the blank: The element with atomic number 17 is a ______.

• Metal

• Metalloid

• Nonmetal

Which of the following elements is in the lanthanide series?

• Uranium

• Cerium

• Radon

• Gold

Which of the following elements is in the actinide series?

• A) Thorium

• B) Lead

• C) Silver

• D) Tin

Fill in the blank: The element with atomic number 14 is a ______.

• A) Metal

• B) Metalloid

• C) Nonmetal

Which of the following elements is a noble gas?

• Hydrogen

• Helium

• Lithium

• Beryllium

Which of the following elements is a halogen?

• Fluorine

• Neon

• Argon

• Krypton

Fill in the blank: The element with atomic number 5 is a ______.

• Metal

• Metalloid

• Nonmetal

Fill in the blank: When an atom loses an electron, it becomes ______.

• a positive ion

• a negative ion

• neutral

• a neutron

Which type of bonding involves metals combining with nonmetals by losing electrons?

• Covalent bonding

• Ionic bonding

• Metallic bonding

• Hydrogen bonding

Why do alkali metals combine readily with other elements?

• Due to their high density

• Due to a single electron in the outer energy level

• Due to their large atomic size

• Due to their low melting point