Which of the following is a property of metals?

• A. Good electrical conductivity
• B. Tend to gain electrons in chemical reactions
• C. Poor heat conduction
• D. Brittle when solid

Answer: (A)

Verified step by step guidance

1. Recall the general properties of metals, which include characteristics related to electrical conductivity, heat conduction, chemical behavior, and physical properties.
2. Understand that metals typically have free-moving electrons, which allow them to conduct electricity efficiently. This is a key property of metals.
3. Recognize that metals tend to lose electrons in chemical reactions (they are usually oxidized), rather than gain electrons, which is typical of nonmetals.
4. Note that metals are generally good conductors of heat, not poor conductors, due to the mobility of their electrons and lattice vibrations.
5. Remember that metals are usually malleable and ductile, meaning they can be shaped without breaking, so they are not brittle when solid.