The phrase
"element hydrogen" refers to a substance called hydrogen, which is a type of element. Elements are the basic building blocks of everything around us, and hydrogen is the lightest and simplest element in the universe. It can be found all over, like in water and stars.
Full definition
White dwarfs — the dense remnants of ordinary stars — usually have very pure atmospheres dominated by the
lightweight elements hydrogen and helium, because heavier elements tend to sink into a star's interior.
As rambunctious young» uns, they undergo bursts of star formation that create hot blue orbs out of the
simple elements hydrogen and helium.
Using the Mainz Microtron, the team of researchers headed by Professor Josef Pochodzalla and Dr. Patrick Achenbach generated a very heavy form of the
common element hydrogen with a nucleus comprised of one proton, two neutrons, and a hyperon.
The cloud consists of ionized gas, or plasma, and contains
the elements hydrogen, helium, and oxygen, along with heavier elements that were generated during the blast itself.
Take the properties of
the elements hydrogen and oxygen.
And even though Jupiter is made predominantly of the lightweight
elements hydrogen and helium, it is 318 times as massive as Earth.