Question

which property do metalloids share with nonmetals?

both are brittle.

both are shiny.

both have low melting points.

both are very conductive.

Explanation:

To solve this, we analyze each option:

• "Both are shiny": Metals are shiny, nonmetals are usually not, metalloids can be somewhat shiny but nonmetals aren't generally shiny, so this is incorrect.
• "Both have low melting points": Many metals have high melting points, metalloids and some nonmetals can have varying melting points, this isn't a shared property.
• "Both are very conductive": Nonmetals are poor conductors, metalloids are semi - conductive, metals are very conductive, so this is incorrect.
• "Both are brittle": Nonmetals are brittle (e.g., sulfur, carbon in non - metal forms), and metalloids are also brittle (e.g., silicon in some forms), while metals are malleable and ductile. So this is the shared property.

Answer:

A. Both are brittle.