Final answer:
Metalloids and nonmetals generally share the property of brittleness, but this is not universally applicable to all elements in these groups. Properties such as shininess, melting points, and conductivity vary widely among elements from these groups.
Step-by-step explanation:
Metalloids share several properties with nonmetals, but the property most relevant to your question is that both groups generally have brittleness. This means they are likely to break or shatter when subjected to stress or force. However, it's worth noting that not all metalloids and nonmetals are brittle. For instance, graphite, a nonmetal, is not brittle. Similarly, some metalloids like Boron are quite hard. Thus, while brittleness is commonly shared, it's not universally applicable to all elements in these groups. Moreover, properties like shininess, conductive abilities, and melting points vary widely among metalloids and nonmetals, making it harder to use these factors as categorical similarities.
Learn more about Metalloids and nonmetals