Question

A metalloid has physical and chemical properties of _____________

A: metals , nonmetals
B: metals and noble gases
C: halogens and noble gas

Answer 1

A metalloid has properties that are intermediate between those of metals and nonmetals, often displaying moderate conductivity and being valuable in the semiconductor industry. So the correct option is A.

Step-by-step explanation:

A metalloid has physical and chemical properties intermediate between those of metals and nonmetals. Metalloids, sometimes referred to as semi-metals, have a unique position on the periodic table, typically situated along the staircase line that divides metals and nonmetals. These elements showcase properties that are characteristic of both groups, such as moderate heat and electrical conductivity and being typically semiconductors. For instance, a metalloid might not be as shiny as a metal, but it's not as dull as a nonmetal, and while it may not conduct electricity as well as a metal, it conducts better than a nonmetal. Metalloids are particularly useful in the semiconductor industry because of their ability to conduct electricity at higher temperatures.

Answer 2

Typical metalloids have a metallic appearance, but they are brittle and only fair conductors of electricity. Chemically, they behave mostly as nonmetals. They can form alloys with metals. Most of their other physical properties and chemical properties are intermediate in nature.