![]() ![]() Heisenberg’s uncertainty principle has a negligible impact on macroscopic objects as the mass of a ball is much larger than that of an electron. This would mean that an attempt at measuring the position of a particle will cause uncertainty in the value of its momentum. This transfer of momenta from photon to electron will cause the momentum of the electron to change. We know that photons hold some finite momentum, a transfer of momenta will occur when the photon collides with the electron. This principle, discovered in 1927 by Werner Heisenberg, is usually stated in the form: xpx h/4, where x is the uncertainty in the x-coordinate of the. Now to measure the position of an object, we need light, so a photon must collide with it and return to the measuring device. To understand Heisenberg’s uncertainty principle in a better way, consider an example where the position of an electron is measured. So the uncertainty in the position would be greater than the diameter of the hydrogen atom, using the Bohr model. ![]() Hence, the exact location of an electron cannot be determined in space is based on Heisenberg's uncertainty principle. It states that it is impossible to determine simultaneously, the exact position and exact momentum (or velocity) of an electron. It was, however, contradictory with Heisenberg's uncertainty principle. Heisenberg’s Uncertainty Principle: Werner Heisenberg a German physicist in 1927, stated the uncertainty principle which is the consequence of dual behaviour of matter and radiation. It was the first atomic model to successfully explain the radiation spectra of atomic hydrogen. The Bohr model was an atomic model based on the hydrogen atom. There salient rules of Pauli Exclusion Principle are that only two electrons can occupy the same orbital and the two electrons that are present in the same orbital should be having opposite spins.Īccording to Hund’s Rule of Maximum Multiplicity rule for a given electronic configuration of an atom, the electron with maximum multiplicity falls lowest in energy. The principle behind this question states that the exact speed and location of any subatomic particle cannot be determined with absolute certainty.Īnalysing each of the options systematically:Īccording to the Heisenberg uncertainty principle for any particle exhibiting both particle and wave nature, it will not be possible to accurately determine both the position and velocity at the same time.Īccording to the Pauli exclusion principle in an atom, no two electrons will have an identical set or the same quantum numbers. Hint:To answer this question, recall the concept of quantum mechanics which govern the principles mentioned in this question. ![]()
0 Comments
Leave a Reply. |