Which one of the following elements is an example of noble gas ? A. Nitrogen B. Hydrogen C. Chlorine D. Helium

April 15, 2024 by rawan239

in group 15 of the periodic table. It is a gas at room temperature and pressure. Nitrogen is the most abundant element in the atmosphere, making up about 78% of the air. Nitrogen is also found in many organic compounds, such as proteins and nucleic acids.

Hydrogen is an element in group 1 of the periodic table. It is the lightest element in the universe. Hydrogen is a gas at room temperature and pressure. Hydrogen is found in water and many organic compounds.

Chlorine is an element in group 17 of the periodic table. It is a yellow-green gas at room temperature and pressure. Chlorine is a very reactive element and is used in many industrial processes.

In conclusion, the correct answer is D. Helium. Helium is a noble gas that is very stable and does not react with other elements. It is a colorless, odorless, and tasteless gas.