Which three groups of the Periodic Table contain the most elements classified as metalloids (semimetals)?
A) 2,13,and 14 B) 14,15,and 16 C) 1,2, and 13 D) 16,17,and 18
Answers
Answer:
your answer ☺️
Explanation:
Metalloids are chemical elements that display properties of both metals and nonmetals.
On the periodic table, metalloids are found along a zig-zag line between boron and aluminum down to polonium and astatine.
Usually, the semimetals or metalloids are listed as boron, silicon, germanium, arsenic, antimony, tellurium, and polonium. Some scientists also consider tennessine and oganesson to be metalloids.
Metalloids are used to make semiconductors, ceramics, polymers, and batteries.
Metalloids tend to be shiny, brittle solids that act as insulators at room temperature but as conductors when heated or combined with other elements.
Semimetal or Metalloid Properties
Semimetals or metalloids are found in a zig-zag line on the periodic table, separating the basic metals from the nonmetals. However, the defining characteristic of metalloids is not so much their position on the periodic table as the extremely small overlap between the bottom of the conduction band and top of the valence band. A band gap separates a filled valence band from an empty conduction band. Semimetals do not have a band gap.
In general, metalloids have the physical properties of metals, but their chemical properties are closer to those of nonmetals:
Semimetals tend to make excellent semiconductors, although most of the elements themselves are not technically semiconducting. Exceptions are silicon and germanium, which are true semiconductors, as they can conduct electricity under the right conditions.
These elements have lower electrical and thermal conductivity than metals.
Semimetals/metalloids have high lattice dielectric constants and high diamagnetic susceptibilities.
Semimetals are typically malleable and ductile. One exception is silicon, which is brittle.
Answer:
MATALLOID ARE THOSE WHICH BOTH PROPERTIES OF MATTER AND NON.. MATTER..
EX Bromine
Germain...
antinomy..
group 14 have all properties.
your ANS.... 14..15...16...
