Answer: (2) ns2 np6
Argon is a chemical element in the eighteen group of the periodic table. It is the third most abundant gas in the earth’s atmosphere and is a noble gas.
Properties of argon
- It’s an odourless, colourless gas that doesn’t interact with anything else.
- Despite being a gas, argon can form certain compounds under extreme conditions.
- It is distinguished by the fact that it has the same degree of solubility in water as oxygen.
- Its thermal conductivity is poor.