Hydrogen
Helium is the first member and the most abundent element in the known universe
sodium and chlorine
Hydrogen at 71%
Nitrogen is!
Mercury is an element itself with its own place on the periodic table with an atomic number of 80. Therefore, the most abundant element in mercury is, mercury.
the second most abundent gas in the atmosphere is oxygen and the first in nitrogen
The most abundant element on Mercury is silicon. It is found in various minerals on the planet's surface, such as silicates and silicon dioxide. Silicon makes up a significant portion of Mercury's composition, along with other elements like oxygen, iron, and sulfur.
The most metallic element on the planet is Francium. It is the last element to be discovered that was not made synthetically.
This element is mercury.
Mercury is the inner planet with the most mass.
A few of the most important things about Mercury are, it is the closet planet to the sun, the surface is almost the same as the moon, and Mercury has an iron core.