Metalloids have properties similar to which of the following groups on the periodic table?

• A. Both metals and nonmetals
• B. Only alkali metals
• C. Only halogens
• D. Only noble gases

Answer: (A)

Verified step by step guidance

1. Understand that metalloids are elements with properties intermediate between metals and nonmetals.
2. Recall that metals are typically good conductors of electricity and heat, malleable, and ductile, while nonmetals are generally poor conductors and have more varied physical states.
3. Recognize that metalloids exhibit a mix of these properties, such as semiconducting behavior, which is why they are often used in electronic devices.
4. Compare the options given: alkali metals, halogens, noble gases, and both metals and nonmetals.
5. Conclude that metalloids share characteristics with both metals and nonmetals, making 'Both metals and nonmetals' the correct choice.