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1.10a QN and Orbital Diagram

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Química

Universidad de Kentucky

4.7 (635 calificaciones) | 65K estudiantes inscritos

This course is designed to cover subjects in advanced high school chemistry courses, correlating to the standard topics as established by the American Chemical Society. This course is a precursor to the Advanced Chemistry Coursera course. Areas that are covered include atomic structure, periodic trends, compounds, reactions and stoichiometry, bonding, and thermochemistry.

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4.7 (635 calificaciones)

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TM

Jun 21, 2017

This is a great course! Very well explained! It's managing to keep my attention on 100% and that's not an easy task for anybody. Thank you for sharing your knowledge with us!

M

Dec 30, 2016

I enjoyed every minute of this course and I have learnt so much. Thank you Coursera for this opportunity. I'll definitely recommend this course to my friends and colleagues.

De la lección

Week 1

We will learn about the components inside the atom and look especially at the electrons. The electron structure determines the properties of the elements. So, by the end of this series of lessons, you will know for each elements where the electrons are located in the atom.

1.01 Subatomic Particles: Protons, Neutrons, Electrons and the Nucleus 21:51

1.02 Understanding Light 19:02

1.03 Quantum Theory, Energy and frequency and the photoelectric effect17:29

1.03a Energy of Photon 4:24

1.03b Watts to Photons 7:02

1.04 Bohr's model of the hydrogen atom 6:42

1.05 The dual nature of the electron 8:01

1.06 The Heisenberg Uncertainty principle 6:40

1.07 Quantum Numbers 25:33

1.07a Quantum Numbers 3:29

1.08 Explaining Atomic Theory 16:20

1.08a Balmer Series 5:38

1.09 Atomic Orbitals 15:45

1.10 Orbital Diagrams 6:21

1.10a QN and Orbital Diagram 1:54

1.11 Electron Configuration 33:33

1.11a Electron Configuration 12:06

Impartido por:

Dr. Allison Soult
Lecturer
Dr. Kim Woodrum
Sr. Lecturer

In this problem, we see that we have an atom presented to us.

It tells us that it only has one electron in its valence shell.

And we're seeing the set of quantum numbers for that electron.

So what information does the number 3, 0, 0, plus one half tell us?

Well, the n is 3.

And the, and that's when we're in the third shell.

And when when the l is equal to 0, that is an s subshell.

So we have a electron in the 3s subshell, spinning a certain way.

Well there's only one orbital there.

Let's look at a periodic table.

So if we count down one, two, three, and it has only one electron valence shell,

we must be dealing with sodium, and it has 11 electrons.

So the element has to be sodium.

And if we were to do the electron configuration and account for

all 11 electrons, we would start at the lowest level, which is 1s.

Put two electrons there.

And then we go to the 2s and put two electrons there.

Then we would go to the 2p and there's three orbitals in the 2p.

So we would go and we would fill it up as so, and that uses ten of the electrons,

and we go to the next level, which is a 3s.

And we would put that one electron there.

So this electron is the last final electron that has that set of

quantum numbers, and it's a sodium atom and

there's its electron, not its configuration, but its orbital diagram.

I could also write its electron configuration.

It would be 1s2, 2s2, 2p6 and 3s1.

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