Answer:
The used term is nonmetal.
Explanation:
Nonmetals are elements that are not shiny or are not good conductors of electricity or heat.
The periodic table has approximately 23 nonmetals in it.
In the periodic table, we can find elements. These ones could be nonmetal and metals.
The elements that lack metallic properties are the nonmetals.
Metals are good conductors of heat and electricity, like Cu or Fe.
Although, nonmetals are not good conductors.
