GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Elements that show the properties of both metals and non metals are called?
A
alloys
B
colloids
C
allotropes
D
metalloids
Explanation: 

Detailed explanation-1: -The elements boron, silicon, germanium, arsenic, antimony, and tellurium separate the metals from the nonmetals in the periodic table. These elements, called metalloids or sometimes semimetals, exhibit properties characteristic of both metals and nonmetals.

Detailed explanation-2: -The physical properties of metalloids tend to be metallic, but their chemical properties tend to be non-metallic. The oxidation number of an element in this group can range from +5 to-2, depending on the group in which it is located. Table 7.6. 2: Elements categorized into metals, non-metals and metalloids.

Detailed explanation-3: -Metalloids can be defined as chemical elements whose physical and chemical properties fall in between the metal and non-metal categories. For example-Boron, Germanium, Arsenic, etc.

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