Question

Which of the following are properties of metalloids? This question has multiple correct options
A. Lustre
B. Brittle
C. Electronegativity value is near 2
D. can form alloys
E. Amorphous

Answer 1

Hint: Metalloids which have both metal and nonmetal characteristics and these are elements on both sides of the zigzag line in the periodic table placed in between metals and non-metals. They show physical and chemical properties of both metals and nonmetals.

Complete step by step answer:
Metalloids are defined as elements whose physical and chemical properties are in between metal and nonmetal. Boron, germanium, silicon, antimony, arsenic, and tellurium the major metalloids. Beside them, Carbon, Aluminium, Selenium, Polonium and Astatine also behave as metalloids sometimes.
These elements are found in the diagonal region of the p-block from boron to astatine. Metalloids have metallic appearances, but they are brittle and only conductor electricity slightly. These elements behave as non-metals chemically. They can also form metallic alloys.
Some of the General Properties of Metalloids are they look like metals, but these elements behave like non-metals,
Physically they are brittle and appear as shiny substances. They exist as solid at ambient temperatures. The electrical conductivity is intermediate to strong. They possess electronic band structures that are like semimetals or semiconductors. These elements commonly have intermediate ionization energies and values of electronegativity.
Metalloids form amphoteric or weakly acidic oxides.
Hence summarising metalloids are solid, can be shiny or dull, ductile, malleable, conduct heat and electricity intermediate between metals and nonmetals, can form alloys and electronegativity value near two, brittle.

So, the correct answer is Option A,B,C,D .

Additional Information:
The elements boron, arsenic, silicon, and antimony have many medical uses. Boron is used in herbicides and in insecticides also, it is an active trace element, in the form of boric acid it has several antiseptic, antiviral, and antifungal properties.

Note: Metals exhibit some property like ductility, malleability, and they are sonorous and lustrous. Ductility is the property with which metal can be stretched into wires. Malleability is the property by which they can be drawn into sheets. Metals are hard. The two exceptions are Sodium and potassium, they are soft. They can be cut using a knife