explain the position of zero group element in periodic table
Noble gas The noble gases are colorless, odorless, tasteless, and nonflammable under standard conditions. They were once labeled groupÂ 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. However, it was later discovered some do indeed form compounds, causing this label to fall into disuse.[9]