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The understanding that the position of an electron in an electron cloud cannot precisely be determined was developed by Werner Heisenberg and is known as the?
Wiki User
∙ 14y ago
"Uncertainty Principle".
He didn't say that the position can't be precisely determined. He said that the position
and the momentum can't both be precisely determined at the same time.
The more precisely you determine one, the more fuzzy the other becomes at the same time.
Wiki User
∙ 14y ago
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Who said electron paths cannot be predicted and when?
Schrodinger and Heisenberg state that electrons cannot be predicted in 1927. It was stated that the more precisely the position of some particles are determined, the less precisely its momentum can be known.
Do electrons travel so fast that it is impossible to know their exact location?
No, that's not how it works. The Heisenberg Uncertainty Principle states that there is a limit to how precisely you can measure position and momentum simultaneously. Actually, it's not just about measuring, position and momentum are not DEFINED at the same time, with arbitrary precision.An electron can very well move slowly, but the Uncertainty Principle still applies.
What lead Heisenburg to his Uncertainty Principle?
Based on the Heisenberg uncertainty principle, the early developers of quantum theory determned that wave functions give only the probability of finding an electron at a given place around the nucleus. Thus, electrons do not travel around the nucleus in neat orbits, as Bohr had postulated. Instead, they exist in certain regions called orbtals. See pgs. 99-100 in Modern Chemistry Answer The Heisenberg uncertainty principle says that the position and momentum of a particle cannot be found simultaneously. In the case of electrons which have very high velocities (thus much momentum) they can only occupy spread-out regions if one knows their velocity. The spread-out region can be thought of as a cloud but is really a region of probability where the electron is likely to be found were one to determine its velocity. The fact that two electrons maximum can occupy a single orbital (be it an s, p, d or f orbital) at a time has much to do with the Pauli Exclusion Principle as well.
What role did supernova play in creating the natural elements?
It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.It is precisely the supernovae that created those elements and dispersed them into space.
Scientists have not yet determined exactly why electrons do not collapse into the nucleus?
Incorrect. Scientists know precisely why electrons do not collapse into the nucleus (mainly, because that's not an allowable energy state; they can be forced there to form neutronium, but only at enormously high pressures).
Who said electron paths cannot be predicted and when?
Schrodinger and Heisenberg state that electrons cannot be predicted in 1927. It was stated that the more precisely the position of some particles are determined, the less precisely its momentum can be known.
What is the definition of the word undefined?
The term 'undefined' means not precisely limited, determined, or distinguished not precisely limited, determined, or distinguished; "an undefined term"; "undefined authority"; "some undefinenot precisely limited, determined, or distinguished; "an undefined term"; "undefined authority"; "some undefine
How was Avogadro's number determined?
The exact number of atoms of Carbon-12 in a block weighing precisely 12 grams.
How the avogadro number was determined?
The exact number of atoms of Carbon-12 in a block weighing precisely 12 grams.
Why is the mass of electron difficult to find?
The mass of an electron is difficult to find because of the Heisenberg Uncertainty Principle. Either a particle's position or direction can be known, and the more precisely one is measured, the other is subject to more possible variation.
Do electrons travel so fast that it is impossible to know their exact location?
No, that's not how it works. The Heisenberg Uncertainty Principle states that there is a limit to how precisely you can measure position and momentum simultaneously. Actually, it's not just about measuring, position and momentum are not DEFINED at the same time, with arbitrary precision.An electron can very well move slowly, but the Uncertainty Principle still applies.
What is the name of the principle that describes why electrons can never be found in a specific location?
The Heisenberg Uncertainty Principle, but you misstate it. Heisenberg adduced that a particle's momentum and position could not be known precisely. Heisenberg basically showed that you cannot know BOTH properties, but you can know one or the other. The reason that you cannot know both is that by measuring one, you affect measurement of the other. However, it has been argued that this is not merely an observer-based phenomenon - like throwing rice at a group of pigeons and then trying to count them - but is intrinsic to the duality of particles themselves, their quantum mechanical nature.
What does ca stand for in timelines and such?
"Ca" stands for "circa", which basically means "on or about". In short it's used to denote a time which can be determined approximately but not precisely.
What is a precisely?
precisely = exactly
Who invented a GPS?
The US Department of Defense developed the satellite-based Global Positioning System (GPS) between 1973 and 1994. Accurate signals are sent by orbiting satellites to any receiver on the Earth's surface that is in their line-of-sight. With information from 4 or more satellites, the location of the receiver can be precisely determined.
Why is it impossible to know precisely the velocityand position of an electron at the same time?
Briefly, this should be considered a fundamental restriction of nature. In the subatomic world, some things simply work differently to what we are accustomed. For more information, do some reading on the "Uncertainty principle", or "Heisenberg Uncertainty", for example here: http://en.wikipedia.org/wiki/Uncertainty_principle
Why are infants uncoordinated?
Their brains are not fully developed yet, so they can't control their movements as precisely as we can. Plus they have to learn control of their bodies just like they have to learn everything else.
