GENERAL KNOWLEDGE

Detailed explanation-1: -Only krypton, xenon, and radon are known to form stable compounds. The compounds of these noble gases are powerful oxidizing agents (substances that tend to remove electrons from others) and have potential value as reagents in the synthesis of other chemical compounds.

Detailed explanation-2: -The noble gases are colorless, odorless, tasteless, and nonflammable under standard conditions. They were once labeled group 0 in the periodic table because it was believed they had a valence of zero, meaning their atoms cannot combine with those of other elements to form compounds.

Detailed explanation-3: -Stable configuration Noble gases have stable configurations. Their valence shell is complete. They have two or eight electrons in their valence shell. They do not gain, lose or share electrons.