How many metals, metalloids and nonmetals are there in the third period of the periodic table?

Open in App

Solution

The number of metal, non-metal and metalloids in third period
The elements present in the third period are Sodium, Magnesium, Aluminum, Silicon, Phosphorous, Sulphur and Chlorine.
On moving left to right in a period, the metallic properties decrease while the non-metallic properties increases.
Thus, Sodium, Magnesium, Aluminum are metals while Phosphorous, Sulphur and Chlorine are non-metals and Silicon is a metalloid.
Hence, there are two metals, three non-metals and one is metalloid present in the third period of periodic table.

Suggest Corrections

Similar questions

Answer the following:

1. How could the modern periodic table remove various anomalies of Mendeleev’s periodic table?

2. In the modern periodic table, which are the metals, non-metals and metalloids among the first twenty elements?

3. What are the demerits of Mendeleev’s periodic table?

4. Define atomic size. How does it vary in a period and in a group?

How are elements arranged in the Modern Periodic Table ?

Join BYJU'S Learning Program