Question

which properties are characteristic of metalloids?
high electrical conductivity and a high melting point
low electrical conductivity and a low melting point
intermediate conductivity and a high melting point
intermediate conductivity and a low melting point

Explanation:

Metalloids have properties between metals and non - metals. Metals generally have high electrical conductivity and high melting points, non - metals have low electrical conductivity and usually low melting points. Metalloids have intermediate electrical conductivity (they are semiconductors) and relatively high melting points compared to non - metals.

Answer:

intermediate conductivity and a high melting point