---

INPUT   DATA

♥ EXAMPLE Of Input/Output

Title

Quantum number of higher energy state, nH		integer
Quantum number of lower energy state, nL		integer

---

---

OUTPUT   VARIABLES   &   GRAPHS

Variables	Values	Units
♦  Energy level at higher state, E2		eV
♦  Energy level at lower state, E1		eV
♦  Energy of emitted photon, ΔE		eV
♦  Wavelength of photon, λ		nm

Hydrogen Atom Transitions

When an isolated hydrogen atom falls from one energy level to a lower one, a photon is emitted. This photon carries away the energy lost.

The following equations give the energy at each quantized energy level, and the energy and wavelength emitted by the photon:

where
     E_n = energy at quantum state n (i.e. electron in its n^th orbit configuration)
     ΔE = energy released in transition to lower state
     n_L = lower quantum state
     n_H = higher quantum state
     λ = wavelength of emitted radiation
     R = Rydberg constant = 1.0973731x10⁷ m^-1

Tips

    ◊ Use link EXAMPLE Of Input/Output  to demo data entry expectations and results; you may edit & use it as starting point

BIBLIOGRAPHY

• Bueche FJ & Hecht E; College Physics, Schaum's Outlines Series; McGraw Hill, New York, 1997.
• Nave CR, Georgia State University, Atlanta, USA, http://hyperphysics.phy-astr.gsu.edu/hbase/hyde.html