By volume, they are oxygen and sodium.
The moon has no atmosphere so therefore there is no dominate gas.
Mercury has no atmosphere.
it is made of small amounts hydrogen helium and oxygen. it has almost no atmosphere because of the planets gravity.
Mercury has no climate since it has no substantial atmosphere.
it makes it very hot and oncreases the amount of radiation
Mercury has the thinnest atmosphere of all the planets in our solar system. Mercury's atmosphere is primarily made up of oxygen, sodium, and hydrogen.
Mercury has virtually no atmosphere due to its proximity to the Sun and its relatively low gravitational attraction force
The dominant gas on Mercury is oxygen, which makes up 42 percent of the planet's atmosphere, followed by sodium, which makes up 29 percent. Other gases include hydrogen and helium.
mercurys period number is 80
Toledo Mercurys was created in 1947.
Toledo Mercurys ended in 1962.
Molecular oxygen, sodium, hydrogen, helium, potassium, argon, nitrogen, carbon dioxide, water vapor, xenon, krypton, & neon