By volume, they are oxygen and sodium.
it is made of small amounts hydrogen helium and oxygen. it has almost no atmosphere because of the planets gravity.
it makes it very hot and oncreases the amount of radiation
Mercury has no climate since it has no substantial atmosphere.
Mercury has virtually no atmosphere due to its proximity to the Sun and its relatively low gravitational attraction force
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
mercurys surface material is made out of nothing but craters
Mercury has a surface pressure that is near enough zero (or a vacuum), the planet holds no real atmosphere due to its small size. There are some trace gases at the surface, but not what one would call a proper atmosphere.
Mercury's atmosphere is extremely thin compared to Earth's. It is composed mostly of oxygen, sodium, hydrogen, helium, and potassium, but its overall density is about 100 trillion times less than Earth's atmosphere. Mercury's weak gravity isn't strong enough to retain a thick atmosphere like Earth's.