Ch_322a_1.06

Ch_322a_1.06 - Quantum Mechanics The development of quantum...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Quantum Mechanics The development of quantum mechanics in the late 1920s led to a better understanding of the relationship between electronic and molecular structures. Louis de Broglie, as a graduate student working on his Ph D in physics at the Sorbonne in 1924, reasoned: If radiant energy under some conditions behaved as a stream of particles, could not particles under some conditions show the properties of radiant energy. ..a wave? He proposed that an electron in an orbit around a nucleus (a Bohr orbit) would have wave properties . There would be a characteristic wavelength ( ! ) associated with an electron in a particular Bohr orbit (an electron of particular energy): ! = h/mv where h is Planck's constant, m is the mass of the electron, and v is its velocity.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Wave Mechanics A wave is a series of crests and troughs that repeat. A wave is described mathematically as a repeating function ( ! , psi ) with positive and negative numerical values that repeat as a function of distance (X) and time. ! wave function (+) (-) (+) (-) x A wave may be a traveling wave moving in a direction (x), or a standing or stationary wave between two points.
Background image of page 2
Standing Waves A standing wave is a wave oscillating perpendicular to an axis
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 8

Ch_322a_1.06 - Quantum Mechanics The development of quantum...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online