Q:

What is the most abundant element in air?

A:

Quick Answer

The most abundant element present in air is nitrogen, which comprises about 78.1 percent of the air on Earth. The second-most abundant element is oxygen, at about 20.9 percent of air's makeup. Together, the elements nitrogen and oxygen account for 99 percent of the chemical composition of air.

Continue Reading

Full Answer

Most of the remaining 1 percent of Earth's air is made up of argon, at approximately 0.9 percent. The rest of air is composed of traces of elements such as neon, helium, krypton, hydrogen, xenon and iodine. Also present in tiny amounts are gases such as carbon dioxide, methane, nitrogen dioxide, carbon monoxide, ammonia and ozone.

Learn more about Earth Science

Related Questions

Explore