Based on periodic trends in metallic character, which of the following elements is likely to be the best conductor of electricity?

• A. Silicon
• B. Lithium
• C. Iodine
• D. Copper

Answer: (D)

Verified step by step guidance

1. Understand that metallic character refers to how readily an element can lose electrons to form positive ions, which is closely related to electrical conductivity.
2. Recall that metals generally have high electrical conductivity because they have free-moving valence electrons that allow electric current to flow easily.
3. Identify the elements given: Silicon (a metalloid), Lithium (an alkali metal), and Iodine (a nonmetal). Compare their positions on the periodic table and their metallic character.
4. Recognize that Copper is a transition metal known for its excellent electrical conductivity due to its metallic bonding and abundance of free electrons.
5. Conclude that among the options, Copper, being a metal with high metallic character, is the best conductor of electricity compared to Silicon, Lithium, or Iodine.