What is the second most abundant element in the Earth's atmosphere?

Answer Oxygen is the second most abundant element in Earth's atmosphere; it makes up 21 percent of the air. 78 percent of the atmosphere is nitrogen. Argon and other gases make up one percent of the atmos... Read More »

Top Q&A For: What is the second most abundant element in the...

Is it okay to nest a table in an inline element that is nested inside a block element?

Yes, just make sure you have a ice sculpture as the center piece...

How abundant is neodymium?

Neodymium, chemical symbol Nd, was discovered in 1885 by Carl Auer von Welsbach. The element is not found naturally and is usually extracted from bastnäsite and monazite, both common ores. As of ... Read More »

What is the most abundant halogen?

Helium is the most abundant halogen in the universe and one of the most abundant elements, second only to hydrogen. Although abundant in gas planets and stars, helium is less frequently found in th... Read More »

How abundant is cesium?

Cesium is found in relatively low amounts throughout the earth's crust and the universe at large. By weight, the occurrence of cesium in the Earth's crust is on the order of 1,900 parts per billion... Read More »