U1.L1 (Metals and nonmetals)

Which of the following best describes the electron configuration in the last energy level of metal atoms?

• a. Ends with 5, 6, or 7 electrons

• b. Ends with 1, 2, or 3 electrons

• c. Always ends with 4 electrons

• d. Ends with 8 electrons

What is unique about mercury among metals?

• a. It has the highest melting point

• b. It is the only metal that conducts electricity

• c. It is the only liquid metal

• d. It is the only metal with luster

What makes graphite unique among nonmetals?

• a. It is the only solid nonmetal

• b. It is the only nonmetal with luster

• c. It is the only nonmetal that conducts electricity

• d. It has the highest melting point

Which property is characteristic of metals?

• a. They are poor conductors of heat

• b. They are opaque

• c. They have metallic luster

• d. They are brittle

Which of the following is NOT a typical example of a metal?

• a. Silver

• b. Copper

• c. Phosphorus

• d. Zinc

All the following are properties of sodium element, except __________.

• a) a metal.

• b) has metallic luster.

• c) bad electrical conductor.

• d) formable.

Lithium and sulphur can be differentiated by electrical conductivity.

• True

• False

Sodium is a soft metal with a melting point lower than that of nonmetals.

• True

• False