a very thin amount of vaporized metal
Mercury's weak gravity and close proximity to the hot sun make it easy for gasses to escape.
Because the gravitational pull of the planet isn't strong enough to hold any 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.
Mercury is a planet.
depends on which planet.
There are in fact 5 gasses you can choose from that are in Mercury's atmosphere. Oxygen, sodium, helium, potassium, and hydrogen.
Mercury is not a dwarf planet. It is a planet.
Mercury is itself a planet - it did not come from a planet!
how does the planet mercury's spins?
Mercury
Mercury is the planet: there is no raw (or ripe) planet associated with it!