2.2a Types of Elements

What are metalloids also called?

• Semimetals

• Nonmetals

• Alloys

• Metals

Where do the electronegativities and ionization energies of metalloids lie?

• Lower than nonmetals

• Higher than metals

• Between metals and nonmetals

• Equal to nonmetals

Which metalloid has a metallic luster but is brittle and a poor conductor?

• Arsenic

• Germanium

• Silicon

• Boron

The reactivities of metalloids are dependent on:

• Their physical properties

• The elements they are reacting with

• Their density

• Their atomic number

Which element is not classified as a metalloid?

• Boron

• Oxygen

• Antimony

• Tellurium

What is the number of metalloids in the periodic table?

• 5

• 6

• 7

• 8

Which metalloid forms a 'staircase' on the periodic table?

• Germanium

• Tellurium

• Arsenic

• Antimony

What is the physical property that varies widely among metalloids?

• Hardness

• Density

• Color

• Malleability

Which metalloid behaves like a nonmetal when reacting with sodium?

• Boron

• Arsenic

• Tellurium

• Silicon

Which metalloid is debated as to its status as a metalloid?

• Astatine

• None of the above

• Polonium

• Both Polonium and Astatine