Helium
aw
Phosphorous
magnesium
Q: What is the most abundant element on Earth? A: Oxygen, which composes about 49.5% of the total mass of the Earth's crust, waters and atmosphere, according to the textbook “Modern Chemistry.” Silicon is second at 28%.
There is more than one element in planet Saturn, but 96% of Saturn is composed of hydrogen. There is also a little helium, and some ammonia ice, among others.
The most abundant element in the earth's crust is a non-metal, oxygen. The second is the metalloid, silicon. The third and fourth are the metals, aluminum and iron.
The Earth's crust consists of the following elements and percentages: # Oxygen--47% # Silicon--28% # Aluminum--8% # Iron--5% # Calcium--4% # Sodium--3% # Potassium--3% # Magnesium--2% # Titanium--0.5% # All others--
Argon is the gas among these. Other elements are solids.
Helium has the lowest electronegativity among all elements.
The most abundant elements found in cells are carbon, hydrogen, oxygen, nitrogen, phosphorus, and sulfur. These elements make up the building blocks of biological molecules like proteins, nucleic acids, lipids, and carbohydrates.
The expected answer is element 115, Ununpentium, if that has been discovered. Among stable elements, the answer would be bismuth.
Hydrogen is the lightest of the elements, with 1 gram per mole.