![]() Under normal conditions, the electron of each hydrogen atom remains in the ground state near the nucleus, which is n = 1 (K – Shell). ![]() Hydrogen is given several spectral lines because any given sample of hydrogen contains an almost infinite number of atoms.The absorption or emission energy calculated from the Rydberg equation defines several series of lines in the electronic transition for hydrogen emission or absorption spectrum. Putting n = 1, n = 2, n = 3, etc in the Rydberg equation we get the energies of the different stationary states for the hydrogen electron. It slightly varies from atom to atom depending upon the nuclear mass. The experimental value of the Rydberg constant for hydrogen spectrum is equal to 109737 cm −1 or 10973700 m −1. Wavenumber in hydrogen spectrum data is defined as the number of waves connected in CGS or SI unit length that is per centimeter (cm −1) or per meter (m −1). The frequency (ν) in the spectrum indicates the number of waves passing a given point per second and is expressed as cycles per second in chemistry or physics. The spectrum equation of hydrogen uses to measure the values of the Rydberg constant for hydrogen in learning chemistry or quantum physics. With the help of this formula, we can calculate the frequency, wavelength, and wavenumber of the line observed in the hydrogen spectrum. The energy of an electron,Į n = −2π 2me 4/n 2h 2 and ΔE = E 2 − E 1īut the frequency of emitted light from the electromagnetic spectrum is related to energy by the plank equation, The energy corresponding to a particular line in the emission and absorption spectra or spectrum of hydrogen is the energy difference between the ground level and the exited level.īohr model provides the energy of an electron at a particular energy level. He connected photon energy and frequency of the emitted light for the chemical elements in the periodic table. In 1901, Planck’s quantum theory proposed a formula for the electromagnetic radiation. When this excited electron returns to the ground state it forms the following emission spectrum diagram for the hydrogen atom with a definite frequency of radiation. On the addition of thermal energy or electrical energy, the electron moved to the higher energy level or higher energy orbital of an atom. The absorption energy corresponding to the electronic transition spectrum from n = ∞ to n = 1 gives the ionization energy of the hydrogen atom. When the value of the principal quantum number increases the energy values for orbits become closer to each other. The calculation of the atomic emission or absorption spectrum is feasible in quantum chemistry or physics because each hydrogen energy level has definite energies in which the electron particle can stay. Bohr Model explained the existence of various electromagnetic spectrum lines in the hydrogen atom for the spectroscopic study. Hydrogen spectrum (absorption or emission) is an impotent type of tool for the determination of the atomic structure of chemical elements or atoms in quantum chemistry or physics.
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