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Journal of Physics Conference Series

The function of the radial wave of a hydrogen atom in the principal quantum numbers (n) 4 and 5

Bambang Supriadi, Alex Harijanto, M Maulana, Zainur Rasyid Ridlo, W D Wisesa, A Nurdiniaya

Published Apr 1, 2019• 4 citations

Abstract

The simplest atom consisting of a proton and an electron is a hydrogen atom. The energy level and the probability of finding an electron in a hydrogen atom can be determined based on the function of radial wave. The function of radial wave of a hydrogen atom is influenced by the principal quantum number ( n ) and the orbital quantum number ( l ). Completion of the function of radial wave of a hydrogen atom in the principal quantum numbers( n ) 4 and 5 uses the time-independent Schrodinger equation approach in spherical coordinates, variable separation method and uses the associated Laguerre function. The normalized of the function of radial wave of a hydrogen atom R nl ( r ) at n = 4 produces four wave functions:R 40 ( r ); R 41 ( r ); R 42 ( r ); R 43 ( r ), whereas at n = 5 produces five wave functions:R 50 ( r ); R 51 ( r ); R 52 ( r ); R 53 ( r ); R 54 ( r ). The results of this research in the form of the functions of radial wave of hydrogen atom can be used to determine the behavior of electron in a hydrogen atom.

DOI: 10.1088/1742-6596/1211/1/012052

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The lightest and simplest arrangement of protons and electrons is a hydrogen atom. One of the wave characteristics of an atom can be known using the Schrodinger equation. Schrodinger's equations of spherical coordinates consist of radial equations and angular equations. Quantum numbers 4≤ n ≤ 5from the Schrodinger equation sphere coordinates produce different angular wave functions. To find out the angular wave equation using normalization conditions . Based on the normalization conditions for n = 4 a wave function is produced , while for n = 5 a wave function is .

This chapter begins with the simple solution of the Schrödinger equation for hydrogen atom for which the energy value has been derived. The Bohr radius of H atom has also been computed. After this, this chapter provides the generalised solution of the Schrödinger equation for H atom/hydrogen-like species in which F equation, R equation, and T equations have been derived in a simple and lucid way. This chapter also deals with the Laguerre differential equation, Laguerre polynomials, Rodrigues formula for the Laguerre polynomials, Laguerre associated equation and its solution, associated Laguerre polynomials, Rodrigues formula for the associated Laguerre polynomials, and solution of the radial equation. It also provides normalisation of the radial wave function and complete wave function; for the hydrogen atom, hydrogenic atomic orbital; electron density of 1 s electron; mathematical background of shape of orbitals; the most probable distance of electron from nucleus of hydrogen atom, and average distance of electron from the nucleus of hydrogen atom. The end of this chapter describes the references and adequate computational problems (solved problems and question on concepts).

In this chapter we solve the radial TISE for the case of a radial potential, specifically the radial potential of an electron attracted to the proton which is the nucleus of a hydrogen atom. Again, we rely on solutions to a related equation solved by a French mathematician, this time named Laguerre, whose polynomials are, in this chapter, multiplied by a simple exponential function to produce the radial wave functions. These functions contain the principle quantum number, which corresponds to the row number in the periodic table. Multiplying these radial solutions by the spherical harmonics from Chapter 14 produces the full three-dimensional solutions for the hydrogen atom, also known as the atomic orbitals. The relationship between the quantum numbers n , l , and m arise naturally from the possible combinations of radial solutions with spherical harmonics.

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