helium is made
Fusion experiments and designs for fusion reactors generally focus on hydrogen, in the forms of deuterium (hydrogen-2) and/or tritium (hydrogen-3). It should be born in mind that there is not much preventing any atom of any natural element undergoing fusion with something else. In fact, virtually all of what is around us is either hydrogen or something made by fusion, and this includes all the heavy elements like lead uranium.
You think probable to hydrogen.
No fusion, no element
Atoms that are heavier than hydrogen were made by nuclear fusion after the big bang. Initially, only the lightest element, hydrogen, was present. However, after the universe cooled, hydrogen atoms fused to form helium. Later, the fusion of these atoms led to the formation of the other elements.
Hydrogen (into Helium).
Hydrogen is turned into helium in stars.
Typically, hydrogen-1 is converted into helium-4.
Hydrogen is the element that is most likely to undergo nuclear fusion.
Helium is produced by fusion in the interior of the Sun.
Hydrogen undergoes nuclear fusion in the core of the sun to form helium.
Mainly; hydrogen, deuterium, and tritium
Our sun mostly transforms hydrogen nuclei into helium by fusion, but it also fuses helium with helium, lithium with hydrogen, and beryllium with hydrogen, to make elements as heavy as boron.