When two hydrogen atoms fuse to become one helium atom.
Hydrogen bonds occur between polar molecules when hydrogen is linked to nitrogen, phosphorous or fluorine.
Hydrogen bonds occur between hydrogen atoms and electronegative atoms like oxygen or nitrogen in biological molecules such as DNA, proteins, and water.
no
When two hydrogen atoms fuse to become one helium atom.
Hydrogen bonds occur between polar molecules such as water.
The fusion of Hydrogen into Helium.
A chemical reaction between oxygen and hydrogen occur.
Not enough pressure or temperature.
In the cores of stars and hydrogen bombs.
When hydrogen stocks run out
It is found everwhere, as in each and every biomolecule contains at least some hydrogen atoms.
Hydrogen fusion does not occur in the corona of the sun. Fusion reactions occur in the sun's core where conditions are hot and dense enough for hydrogen nuclei to combine to form helium, releasing energy in the process. The corona is cooler and less dense than the core, so fusion cannot take place there.