Question

Which of these is NOT classified as a greenhouse gas?
Carbon dioxide
Methane
Water vapor
Hydrogen

Answer 1

Answer:

hydrogen is not classified as a greenhouse gas

Answer 2

Hydrogen is not classified as a greenhouse gas.

Explanation:

• Hydrogen is the chemical element which is not classified as a greenhouse gas.

• The symbol of hydrogen is "H" and the atomic number is 1.

• The atomic mass of hydrogen element is 1.00784 u.

• In the given options, Carbon dioxide, Methane and Water vapor are classified as greenhouse gases except hydrogen.

• Hence, required answer is hydrogen.