It's mostly iron (Fe) and nickel (Ni) down there. And it's molten, so it's real hot.
aluminum
Hydrogen
Helium is the first member and the most abundent element in the known universe
Aluminium.
sodium and chlorine
Hydrogen at 71%
Mercury is the most iron-rich planet in the solar system.
oxygen is the most abundent element present i n the earth crust by weight.Because it makes covelent bond with silicon to form silicates ,which react with other minoer elements of the earth to foem a huge number of silicate minerals.
Nitrogen is!
It's mostly iron (Fe) and nickel (Ni) down there. And it's molten, so it's real hot.
the second most abundent gas in the atmosphere is oxygen and the first in nitrogen
nitrogen is the most common element in the earths atmosphere