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How does the electron cloud model for atomic electrons differ from the planetary model?

Unlike the planetary model's description of an atomic electron's position, the electron cloud model takes into account the quantum mechanical result known as the Heisenberg uncertainty principle. Heisenberg's uncertainty principle basically tells us that the more certain we are of a particle's position, the less certain we are of its momentum and its kinetic energy. This means that we can't say that an electron is at this exact spot while also saying that it's orbiting the nucleus with thisexact momentum, telling us that the planetary model of an atom is incorrect.We can say that an electron has a certain probability to occupy a certain quantum state with a certain energy though. This is where the electron cloud comes in. The electron cloud is simply a model describing the spherical probability distribution of an electron's position around an atomic nucleus. The reason we use the word cloud in the model is to emphasize the fact that the electron's position is a probability function and therefore all spread out and fluffy, like a cloud.


What is the following phrase describes how the position of an electron relates to its energy?

The phrase "quantum mechanical model of the atom" describes how the position of an electron relates to its energy. In this model, electrons are described by probability distributions called orbitals, which represent the likelihood of finding an electron at a particular location. The energy of an electron is quantized, meaning it can only exist in certain discrete energy levels within an atom.


Why can't there be probability density equal to 100 percent in an orbital?

The probability density cannot be greater than 100% because nothing exists with a higher probability, except colloquially. We can say that we have a 110% certainty of something but that is only meant to express how certain we are. Because in reality nothing can be more than 100% in terms of probability density.


What is the definition of radial probability distribution and how does it relate to the distribution of electron density in an atom?

The radial probability distribution is a measure of the likelihood of finding an electron at a certain distance from the nucleus in an atom. It shows how the electron density is distributed around the nucleus in different shells or energy levels. This distribution helps us understand the probability of finding an electron at a specific distance from the nucleus, which is crucial for understanding the structure of atoms.


If something is certain the probability is?

The probability of something that is certain is 100% The probability of something that is completely impossible is 0%


What determines probable location of electron according to theory of wave mechanics?

The probable location of an electron is determined by its wave function, which describes its probability density distribution. According to the theory of wave mechanics, the square of the wave function gives the probability of finding an electron at a specific location in space. Ultimately, the electron does not have a definite location in space but rather exists as a probability cloud within a certain region.


What is certain probability?

If something is certain, then the probability of that something is 1.


What is the significance of the radial probability distribution in quantum mechanics?

The radial probability distribution in quantum mechanics shows the likelihood of finding an electron at a certain distance from the nucleus in an atom. It helps us understand the electron's behavior and the structure of atoms, which is crucial for predicting chemical properties and reactions.


Why is electron said to execute standing wave motion while moving in an orbit?

The electron itself isn't a wave, it's the probability of finding it in a certain spot that's governed by a wave equation.


How does one determine the location of an atom's electrons using the quantum theory?

Due to Heisenberg's uncertainty principle one can never know the position of an electron to an arbitrary precision. We can only use quantum mechanical probability densities to estimate it's position. Or we can measure it's location, but that only tells us where it was and can not tell us where it is or how fast it is moving.


What is the probibility of 1 mean?

A probability of 1 refers to an event that is certain to happen.A probability of 1 refers to an event that is certain to happen.A probability of 1 refers to an event that is certain to happen.A probability of 1 refers to an event that is certain to happen.


The region of space where electrons of a certain energy move about the nucleus of an atom?

The region of space where electrons of a certain energy move about the nucleus of an atom is called an electron orbital. Electron orbitals are regions where there is a high probability of finding an electron based on its energy level. Different electron orbitals have different shapes and orientations.