Argon is a gas you probably don’t hear about every day, but it’s all around us. It makes up about 1 % of the air we breathe and plays a quiet but important role in science and industry. Even though it’s a gas, it doesn’t react easily with other elements, which makes it super useful in situations where we need a stable, non reactive environment like inside light bulbs or during welding. Lets scroll down, and know everything about argon. Read carefully as many questions can be answered from this topic in the entrance exam.

What is Argon?

Argon is a chemical element with atomic number 18 and group 18 and symbol (Ar) in the periodic table. Argon is odorless, colourless that is totally inert to other substances. When an inert atmosphere is required, argon is frequently used. In this manner, titanium and other reactive elements are produced.The symbol of argon is (Ar) and it is colourless in nature. The molar mass of the argon is 39.948 u and the atomic number of argon is 18u. The melting point and boiling point of argon is \(-189^{\circ}\text{C}\) and \(-185.7^{\circ}\text{C}\). The Density of argon – 0.001633g cm−3 and It is used in welders, incandescent light bulbs, used in synthesising titanium and other reactive metals.

We must first determine how many electrons the argon atom has in order to record its electron configuration (there are 18 electrons). All 18 of the electrons will be placed in orbitals around the nucleus of the argon atom when we write the configuration.

The first two electrons in the electron configuration for argon will be in the 1s orbital. The following two electrons for argon enter the 2s orbital since the 1s orbital can only hold two electrons. The 2p orbital will receive the following six electrons. Up to six electrons can fit inside the p orbital. Six will be placed in the 2p orbital, followed by the following two electrons being placed in the 3s. Now that the 3s is full, we will transfer the remaining six electrons to the 3p. As a result, the electron configuration for argon will be \(1s^22s^22p^63s^23p^6\) Because the third energy level having eight electrons and is therefore it is full \(3s^23p^6\)it is called a noble gas.

Valency of Argon

Argon has 8 valence electrons in its outermost shell. So it will neither lose any electron nor gain any electron.

Physical and Chemical Properties of Argon 

Uses Of Argon

Effects of Argon Exposure

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