Question

Assertion: Inert gases are monatomic.
Reason: Inert gases have a stable configuration.
A.Both assertion and reason are true and the reason is a correct explanation of the assertion.
B.Both assertion and reason are true but the reason is not the correct explanation of assertion.
C.The assertion is true but the reason is false.
D.Both the assertion and reason are false
E.The assertion is false but the reason is true.

Answer 1

Hint:
The gases are noted as inert gases because of the fact that their valence shells (octets) are filled which make them extremely non-reactive. The total electron shells of those atoms make noble gases extremely stable and unlikely to create chemical bonds because they need little tendency to achieve or lose electrons.

Complete step by step answer:
A chemical element could be a gas that doesn't undergo chemical reactions under a group of given conditions. The noble gases often don't react with many substances and were historically named inert gases. Inert gases are used generally to avoid unwanted chemical reactions degrading a sample.
Pure argon and nitrogen gases are most typically used as inert gases because of their high natural abundance and low relative cost.
Unlike noble gases, a noble gas isn't necessarily elemental and is usually a compound gas. Just like the noble gases, the tendency for non-reactivity is because of the valence, the outermost grouping, being complete altogether the inert gases. This can be a bent, not a rule, as noble gases and other inert gases can react to make compounds.
The group $18$ elements include helium, neon, argon, krypton, xenon, and radon. They're observed as noble gases or inert gases. The overall configuration of the valence shell is $n{s^2}n{p^6}$ All of those elements occur in a very free state within the atmosphere
So the correct option is A.

Note:These undesirable chemical reactions are often oxidation and hydrolysis reactions with the oxygen and moisture within the air. The term chemical element is context-dependent because several of the noble gases will be made to react under certain conditions. They're colourless, tasteless, and odourless gases. They exhibit low melting and boiling points. They need high positive electron gain enthalpy and high ionization enthalpy.Since the non-reactive properties of inert gases are prevalent, they are often useful to prevent undesirable chemical reactions from taking place. Food is packed in inert gas to remove the oxygen gas. This prevents the bacteria from growing. It also prevents chemical oxidation by oxygen in the normal air.