Q. With reference to Noble gas, consider the following statements:
1.Noble gases are colourless, odourless, tasteless, nonflammable gases.
2.The abundances of the noble gases increase as their atomic numbers increase.
Which of the statements given above is/are correct?
Answer: A
Notes:
Noble gases are a group of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table.
The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).
Statement 1 is correct: The noble gases are colourless, odourless, tasteless, nonflammable gases.
Statement 2 is incorrect: The abundances of the noble gases decrease as their atomic numbers increase. Helium is the most plentiful element in the universe after hydrogen.
Source: The Hindu
