Correct Answer - Option 4 : Chemically unreactive
The correct answer is Chemically unreactive.
Inert gases are Chemically unreactive.
- An inert gas is a gas that does not undergo chemical reactions under a set of given conditions.
- The noble gases often do not react with many substances and were historically referred to as inert gases.
- The group 18 elements include -
- helium, neon, argon, krypton, xenon, and radon.
- But recent studies have shown reactive compounds of xenon, krypton, and radon.
- Hence, option 4 is correct.
The IUPAC is responsible for maintaining the periodic table.
Nobel gas :
- Noble gas, any of the seven chemical elements that make up Group 18 (VIII a) of the periodic table.
- The noble gases are colourless, odourless, tasteless, nonflammable gases.
- They traditionally have been labelled Group 0 in the periodic table because for decades after their discovery.
- it was believed that they could not bond to other atoms, that is, that their atoms could not combine with those of other elements to form chemical compounds.