He realized that Rutherford's model ... hydrogen atoms. Bohr's theory that electrons existed in set orbits around the nucleus was the key to the periodic repetition of properties of the elements.

Space in a car is limited, yet hydrogen is the most dispersive element in the universe and ... For this reason, this model has two side-by-side openings, with the latch to open the hydrogen ...

The term “hydrogen economy” refers to the vision of using hydrogen as a clean, low-carbon energy resource to meet the world’s energy needs, replacing traditional fossil fuels in various applications, ...

Hydrogen is an element; it exists naturally as a molecule. Each hydrogen molecule is made up of two hydrogen atoms. In hydrogen cars hydrogen reacts with oxygen in a fuel cell, making electricity ...