Do hydrogen and helium have the same emission spectrum?

Do hydrogen and helium have the same emission spectrum?

There are different interactions present in helium atom such as electron-electron repulsion and nuclei-electron repulsion. So, due to the presence of different energy levels, there is emission of different wavelengths in helium atom. Therefore, hydrogen emission wavelength is different from helium emission wavelength.

Why is the spectrum of helium different from that of hydrogen?

What is Helium Emission Spectra? It has more lines in it compared to hydrogen emission spectrum. It is mainly because the helium atom has more electrons than a hydrogen atom. Therefore, more electrons get excited when we pass a white light beam through a helium sample, and it causes the emission of more spectral lines.

What is the atomic spectrum of helium?

The 12 lines of the visible helium spectrum correspond to wavelengths of 388.8, 447.1, 471.3, 492.1, 501.5, 504.7, 587.5, 667.8, 686.7, 706.5, 728.1 and 781.3 nanometres (nm).

How does Bohr’s concept of atom explain successfully the atomic spectrum of hydrogen?

Niels Bohr explained the line spectrum of the hydrogen atom by assuming that the electron moved in circular orbits and that orbits with only certain radii were allowed. The orbit closest to the nucleus represented the ground state of the atom and was most stable; orbits farther away were higher-energy excited states.

Do He+ and H have similar spectrum?

The Spectrum of the He⁺ is similar to the Hydrogen because He⁺ has 1 electrons as there are 1 electron n the Hydrogen. 1 electrons is present in the Hydrogen, thus its spectrum will be similar to Hydrogen only.

What is the visible color of helium?


Wavelength (nm) Color Frequency (Hz)
501 blue-green 5.99 x 1014
505 blue-green 5.94 x 1014
587 yellow 5.11 x 1014
669 red 4.48 x 1014

How much energy does it take to ionize helium?

The helium ground state consists of two identical 1s electrons. The energy required to remove one of them is the highest ionization energy of any atom in the periodic table: 24.6 electron volts.

How is the value of the helium spectrum determined?

Some changes by Born in the analysis are noted, and a discussion of some of the atomic physics concepts learned is included. The Abramzon-Siegel experiment on the helium spectrum derives its value by comparing spectral lines from the hydrogen and helium spectra.

What’s the difference between helium and hydrogen in the atmosphere?

Due to the very light weight of these gases, they are used to fill air balloons. The main difference between helium and hydrogen is that helium atom exists as a monoatomic gas in the atmosphere whereas hydrogen exists as a diatomic gas in the atmosphere.

What happens when helium is added to the nucleus?

The addition of one more proton to the nucleus and one more orbiting electron, to make helium, results in a significantly more complex atomic system. Being the second simplest of atoms, helium could certainly be a starting point for a quantitative spectral analysis beyond atomic hydrogen.

Where are the hydrogen and helium wavelengths entered?

The hydrogen wavelengths are entered in a row near the top of the spreadsheet in order of the initial quantum number ni for their corresponding lines in the Balmer series. The helium wavelengths are entered in a column on the left side of the spreadsheet.