Question

a is generally a poor conductor of heat and electricity and has a wide range of chemical properties. a also tends to gain electrons. a is
a nonmetal
b metal
c metalloid

Explanation:

Nonmetals are poor conductors of heat and electricity, have diverse chemical properties, and tend to gain electrons (as they are electronegative). Metals are good conductors and tend to lose electrons. Metalloids have properties between metals and nonmetals but don't match the "poor conductor + gain electrons" description as strongly as nonmetals. So the correct option is a.

Answer:

a. Nonmetal