Helium has more emission lines than hydrogen because it has more electrons and energy levels, leading to more possible transitions between these levels and the emission of different wavelengths of light.
Helium was more suitable but not available in Germany before the war.
Helium is non-flammable, making it safer than hydrogen which is highly flammable. This reduces the risk of fire accidents when using helium to lift blimps. Additionally, helium is more abundant and easy to obtain compared to hydrogen, making it a more practical choice for lifting gas.
Helium is used instead of hydrogen for balloons because it is non-flammable, whereas hydrogen is highly flammable. This reduces the safety risk associated with using hydrogen in balloons. Additionally, helium is more abundant in nature and does not react with other substances, making it a safer and more practical choice for filling balloons.
Jupiter has more hydrogen and helium gas because it has more gravitational pull than any other planet so it pulls almost every gas with a greater efficiency and does not allow to escape from its atmosphere,as in the case of earth gases like (hydrogen) tends to escape easily.
Xenon has more spectral lines than helium due to its more complex electron configuration with multiple electron orbitals and subshells. This leads to a greater number of possible energy transitions for its electrons, resulting in a larger variety of spectral lines when these transitions occur. In contrast, helium has a simpler electron configuration with only two electrons, leading to fewer possible energy transitions and thus fewer spectral lines.
Helium has more mass than hydrogen. Helium is composed of two protons and two neutrons, while hydrogen is a single proton.
hydrogen.
Does the questioner mean, "Why does the helium spectrum have more VISIBLE lines than hydrogen?"? I am not sure how many lines (within as well as outside the visible spectrum) that there are in the spectrum of each of these elements. I don't think anybody has worked out the spectrum of helium from first principles though they have for hydrogen (find out about the Balmer and Lyman series). To hazard a guess, I would think that, because helium has two electrons instead of hydrogen's one, there are many more energy levels they can have so the lines relating to each change of energy would be more bunched together, hence the greater the chance of them falling within the visible range.
hydrogen.
Hydrogen is dangerous than Helium because Hydrogen is a stronger gas than Helium.
A hot air balloon doesn't contain helium or hydrogen.
Hydrogen has more lifting power than helium because it is lighter. This means that a given volume of hydrogen can lift more weight than the same volume of helium.
The atomic number of helium is one more than that of hydrogen. In both the elements, the electrons are filled in the 1s orbitals. Hydrogen has one electron, helium has two.
Hydrogen is extremely flammable and helium is safer.
As a star ages, it fuses hydrogen into helium in its core. Therefore, helium becomes more abundant in older stars compared to younger stars.
The gas is helium. Helium is inert and has 2 protons, while hydrogen has 1 proton.
Hydrogen gas is liquefied first than helium gas because hydrogen has a higher critical temperature and pressure than helium. This means that hydrogen can be liquefied at higher temperatures and pressures compared to helium. Helium requires lower temperatures and pressures to be liquefied, making it more challenging to achieve compared to hydrogen.