Chemistry, asked by Anonymous, 1 year ago

The Quantum Mechanical Model

The discovery that began quantum mechanics as a field of study was when physicists Albert Einstein and Max Planck proved that light and matter can behave both as particles and waves. This began the era of quantum mechanics, which is basically the physics of the very tiny. If particles like electrons can behave as waves, it means that they don't have an exact position the way we would imagine for a traditional particle. Quantum mechanics tells us that you can't precisely know both the position and velocity of an electron at the same time.

This means that we shouldn't imagine electrons as single objects going around the atom. Instead, all we know is the probability of finding an electron at a particular location. What we end up with is something called an electron cloud. An electron cloud is an area of space in which an electron is likely to be found. It's like a 3-D graph showing the probability of finding the electron at each location in space.

Quantum mechanics also tells us that a particle has certain numbers (called quantum numbers) that represent its properties. Just like how materials can be hard or soft, shiny or dull, particles have numbers to describe the properties. These include a particle's orbital quantum numbers, magnetic quantum number, and its spin. No two electrons in an atom can have exactly the same quantum numbers.

Orbital quantum numbers tell you what energy level the electron is in. In the Bohr model, this represents how high the orbit is above the nucleus; higher orbits have more energy. The first orbit is n=1, the second is n=2, and so on. The magnetic quantum number is just a number that represents which direction the electron is pointing. The other important quantum mechanical property, called spin, is related to the fact that electrons come in pairs. In each pair, one electron spins one way (with a spin of one half), and the other electron spins the other way (with a spin of negative one half). Two electrons with the same spin cannot exist as a pair. This might seem kind of random, but it has effects in terms of how magnetic material is. Materials that have unpaired electrons are more likely to be magnetic.

Although the quantum mechanical model of the atom is more abstract and complex, it's a much more accurate picture of how atoms work. Because of this, it allows us to make better predictions about how particles will behave when we try to interact with them. We use quantum mechanics to create flatscreen TVs, camera sensors, and computers, so knowing about quantum mechanics is very useful.

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Answers

Answered by RK242
4
Yes it is..
Impressive description.. indeed!!
Although it is certainly basic.. But very precise..
Yes, quantum mechanics is the Domain of
Sub-Atomic particles and particles much smaller than the elementary particles like electron proton and neutron etc.
Do you know that Albert Einstein, who played a great role in developing Quantum mechanics by his Photoelectric Equation.. He did not personallly believe in this theory.. He did not agree with Heisenbergs Uncertainty Principle,
and said that God does not put His hands on dies(relating to the propabilitic description of matter) He believed that the theory is somehow incomplete.. and he wanted to complete it.. But his time was over then..
But nevertheless, Quantum Mechanics lives on and it explained many phenomena which were not explained by classical physics or electromagnetism..
At last, I was very happy to see another one like me who also takes interest in this field as I also do..
What else can I say..
Keep Up the Good Work
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