Photoelectric Effect, Work Function, Threshold Frequency, Wavelength, Speed & Kinetic Energy, Electr

This chemistry video tutorial explains how the photoelectric effect works. It also explains how to use the work function of metals to calculate the threshold frequency and maximum wavelength of light necessary to eject an electron off the surface of an active metal. In addition, it explains how to calculate the speed of an electron as well as the kinetic energy of an electron in electron volts. You need to know how to convert electron volts to joules and vice versa. This video provides all of the formulas and equations needed including plenty of practice problems and examples.

Speed of Light, Frequency, Wavelength:

Photon Energy:

The Photoelectric Effect:

De Broglie Wavelength:

The Bohr Model of Hydrogen:

Heisenberg's Uncertainty Principle:

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Intro to Quantum Numbers:

Orbitals & Atomic Energy Levels:

Maximum Number of Electrons:

Intro to Electron Configuration:

Electron Configuration Exceptions:

Noble Gas Notation:

Electron Configuration of Ions:

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Orbital Diagrams:

Paired & Unpaired Electrons:

Aufbau's Principle & Hund's Rule:

Paramagnetic & Diamagnetic Elements:

Valence Electrons & Periodic Table:

Effective Nuclear Charge:

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Slater's Rule:

How To Identify The Element:

Quantum Numbers - Mega Review:

Quantum Numbers - Practice Test:

Final Exams and Video Playlists:

Full-Length Videos and Worksheets:

[ArmaGhedoNNN]

I've learned more in 20 minutes than in 20 hours at physics class. Thanks a lot, tomorrow i have the exam :)

[doubletrouble]

You know whah, actully I was seaking for a meditation music and I found this and now I'm calculating the wavelengths and studying phyisics. Nothing is more relaxable than this for me. Thank you a lot for your well-explained Photoelectronic Effect and for your problem solvings. 😉

[bruktaitberhanu]

Is this true
High intensity light ejects more number of photons from a metal surface

[blaxk_light]

I appreciate you man. You successfully prevented me from punching a hole through the wall of my dorm room. Thank you!

[mrsushi]

Nice video, but there’s one small part you missed out, so I hope this helps
So basically if the frequency of the incident light is EQUAL to the threshold frequency, the electrons will get unbounded, but they won’t be ejected as there is no extra kinetic energy for the electrons to use to move out of the surface
On the other hand, if the frequency is GREATER THAN the threshold frequency, then the electrons will get ejected, as the excess frequency will get converted into kinetic energy, and hence the electron can escape with any sort of velocity, depending on how much higher the frequency is.
Hope this helps! :)

[anasamanullah]

Honestly this channel is the best to learn any topic you want, he explains it so well with easy and simple examples!!

[bajiyaa]

Dude thanks a lot, this came in really handy. I was having difficulty in finding the speed of the photoelectron and now i understand it. Thanks a lot, man.😁

[haimz]

Hello,
I’ve been watching your videos and I just wanted to say thank you.
You are a big help. when I don’t understand some of the thing from my professors I go to your videos.
Thank you keep it going.

[sefofiwilliamlebea]

The only thing I wish for is to see this guy's face 🙏 I mean he might be God 😀. Thanks a lot

[xandersafrunek]

I have to say that your videos have been great thus far. I am a straight-A student at OSU, yet my Engr. Chem. course is beating the living **** out of me. I just need to pass this course and I am guaranteed as a Mechanical Engr. major. You are much less arrogant than my professor, and you seem to focus on all of the important information exclusively. Thanks for all the help.

[rebootthirteen]

You deserve a nobel prize for making things very easy to understand . That's the whole idea of learning 😎😅

[guybar]

Nice video but it drives me nuts that frequency is v and not f.

[ebhojayejuliet]

Oh I'll continue skipping school you're always there for me💀💀

[richie]

YOUR VIDEOS HAD TAUGHT ME WAY MORE THAN WHAT I'VE LEARNT IN SCHOOL

[oluwabunmi]

Someone help me, no matter how many times I put those numbers in the kinetic formula into my calculator.

I always get a 1.36 and he got 1.357 when calculating kinetic energy.

[georgesadler]

Professor Organic Chemistry Tutor, this is an excellent explanation and analysis of Photoelectric Effect, Work Function, Threshold Frequency, Wavelength, Speed and Kinetic Energy in AP/General Chemistry. Once again, formulas are very important when breaking down and solving problems in Chemistry. The formula shows the relationship between all the great inventions in Chemistry. This is an error free video/lecture on YouTube TV with the Organic Chemistry Tutor.

[najmachavez]

How did you get 9.97 * 10^-20? I keep getting -3.68 *10^-19....

[kelvinkamutindi]

Thanks bra you save me from destroying my text book. Awesome stuff, keep it up.

[simonvutov]

bro keeps saying "the word function", also frequency is f, not v. it looks like velocity

[anshuy]

I have a doubt in 2nd question c part
I took work function =h v not but I'm getting different answer can anyone tell me why