Multiple Choice
Which element is the most abundant in Earth's crust?
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2. Atoms & Elements
Periodic Table: Representative Elements & Transition Metals
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Which element is an excellent conductor of electricity and is commonly used in electrical wiring?
A
Aluminum (Al)
B
Copper (Cu)
C
Iron (Fe)
D
Zinc (Zn)
Verified step by step guidance1
Understand that electrical conductivity in metals depends on the availability of free electrons that can move easily through the metal lattice.
Recall that among common metals, copper (Cu) is known for its high electrical conductivity, making it an excellent conductor of electricity.
Recognize that copper is widely used in electrical wiring because it combines good conductivity with ductility and resistance to corrosion.
Compare the given options: Aluminum (Al) is also a good conductor but less conductive than copper; Iron (Fe) and Zinc (Zn) have lower conductivity and are not typically used for wiring.
Conclude that copper (Cu) is the best choice among the options for electrical wiring due to its superior conductivity and practical properties.
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