Question

Name the three categories in which all the elements are classified.

Answer 1

1. The three categories in which the elements are classified are as follows:
   1. Metals
   2. Non-metals
   3. Metalloids

Metals: These elements form cation by the loss of an electron. Therefore, metals are called electro-positive elements.

• Examples of metals are: Copper $\left(\mathrm{Cu}\right)$, Silver $\left(\mathrm{Ag}\right)$, Iron $\left(\mathrm{Fe}\right)$, Mercury $\left(\mathrm{Hg}\right)$, etc are some typical metals.
• Exception: Mercury is the metal that is found in a liquid state and the remaining metals are found in a solid-state.

Non-metals: These elements generally gain electrons and form anions. Therefore, non-metals are called electron-negative elements.

• Examples of non-metals are: Carbon $\left(C\right)$, Sulphur $\left(S\right)$, Bromine $\left(\mathrm{Br}\right)$, Hydrogen $\left(H\right)$, Nitrogen $\left(N\right)$, etc.

Metalloids: The elements that act like both metals and non-metals are called metalloids.

• Examples of metalloids: Boron $\left(B\right)$, Silicon $\left(\mathrm{Si}\right)$, Arsenic $\left(\mathrm{As}\right)$, etc are some of the metalloids.

Therefore, the three categories in which the elements are classified are Metals, Non-metals, Metalloids.