Question

What is mettalloids?
Give 500 words ​

Answer 1

Answer:

A metalloid is a type of chemical element which has a preponderance of properties in between, or that are a mixture of, those of metals and nonmetals. There is no standard definition of a metalloid and no complete agreement on which elements are metalloids. Despite the lack of specificity, the term remains in use in the literature of chemistry.

The six commonly recognised metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. Five elements are less frequently so classified: carbon, aluminium, selenium, polonium, and astatine. On a standard periodic table, all eleven elements are in a diagonal region of the p-block extending from boron at the upper left to astatine at lower right. Some periodic tables include a dividing line between metals and nonmetals, and the metalloids may be found close to this line.

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. Metalloids are usually too brittle to have any structural uses. They and their compounds are used in alloys, biological agents, catalysts, flame retardants, glasses, optical storage and optoelectronics, pyrotechnics, semiconductors, and electronics.

Answer 2

Metalloids are a small group of elements founds in the periodic table of elements along the zigzag line that distinguishes metals from non-metals and is drawn from between boron and aluminium to the border polonium and astatine.

Following are the elements that are considered to be metalloids:

Boron (B)

Silicon (Si)

Germanium (Ge)

Arsenic (As)

Antimony (Sb)

Tellurium (Te)

Polonium (Po)

These seven elements were classified as metalloids in the periodic table from the 13th to the 16th group.

It was supposed to classify Astatine as either a non-metal or metalloid. The formation of metals has also been expected.

Metalloids have properties that are intermediate between metals and non-metals. They have properties that are difficult to characterize.

Physical Properties of Metalloids

State of matter -> Solid

Lustre -> Metallic lustre

Elasticity ->Brittle

Conductivity -> Semi-conductive in nature

Chemical Properties of Metalloids

Oxidation ->They are capable of forming glasses.

Alloys->When mixed with metals, they form alloys.

Allotropic ->Metallic and non-metallic allotropes are formed.

Melting ->Few metalloids contract when they are melted.

Compounds->Compounds are formed when they react with halogens.

Common Properties of Metalloids

• Metalloids are good semiconductors.
• The reactivity of metalloids is dependent on the properties of the elements they are reacting with.
• Electronegativity and ionization energy are between metals and non-metals.