mercury has helium hydrogen and potassium
helium,oxgyen,sodium
Very, very little, as Mercury's atmosphere is almost a vacuum only minute traces of gasses are found.
Mercury's weak gravity and close proximity to the hot sun make it easy for gasses to escape.
Molecular oxygen, sodium, hydrogen, helium, potassium, argon, nitrogen, carbon dioxide, water vapor, xenon, krypton, & neon
Mercury has no atmosphere, however, there is a trace exosphere containing hydrogen, helium, and oxygen, that gets dynamically created and destroyed.
Because the gravitational pull of the planet isn't strong enough to hold any gasses.
Atmosphere. It is a mixture of gasses that surrounds the earth.
enough mass to keep it in placesource to create the atmosphere gasses
Mercury's close proximity to the sun has caused it to lose any real atmosphere or gasses it may have had long ago. It's all rock.
The minor gases in Mercury's atmosphere include hydrogen, helium, oxygen, sodium, potassium, and water vapor. These gases are present in very low concentrations compared to the dominant gases like oxygen and sodium.
Mercury has no atmosphere, so it experiences extreme temperature variations between day and night. Venus has a thick atmosphere that traps heat, leading to its extremely high surface temperatures. Mars has a thin atmosphere, which is not effective at trapping heat, resulting in cold surface temperatures.