Periodic Table Part 8: Halogens (F, Cl, Br, I, At, Tn)

It's time to check out Group 17 on the periodic table, the halogens. This includes fluorine, chlorine, bromine, iodine, astatine, and tennessine. What can we say about their properties, reactivities, and applications? Let's find out!

Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience!

[ItsKyleMang]

Thanks for the great content Professor. Somewhat off topic: Would you make a video telling us the story of John L. Leal and how he revolutionized public health with science, in the face of some of the toughest adversity for the time? Cheers from 🇨🇦.

[pointylashes]

🎶he knows a lot about the science stuff professor Dave explain 🎶

[richardkeilig]

Your methods of teaching, knowledge, and use of visual effects are outstanding. I will have my class watch the video. Thanks, Rick
MUHS Science, Iowa

[glennpearson]

Great coverage of the halides, Professor Dave. As I am a civil engineer with an environmental engineering background, I thought I'd add one other tidbit about fluoride that has been making lots of headlines in the environmental world lately. I'm talking about PFAS and PFOA, which you glanced on in this video as they are compounds found in, among many other things, teflon. Polyfluoroalkyl substances, or PFAS, as well as perfluorooctanoic acid, or PFOA, are present in many drinking water sources and are chronically toxic to human health in concentrations as low as a few dozen parts per trillion. If you've ever eaten something that was first cooked on a "non-stick" (think teflon) pan, then chances are quite high that you have some amount of PFAS in your system. Unfortunately, like so many other manmade substances that turn out to have long-term side-effects, PFAS and PFOA are compounds that are difficult to break down (through high heat, chemical, or biodegradation) and are readily absorbed into human tissue.

[MaryAnnNytowl]

I studied the basics of this back in high school, but nowhere near in depth like this, so... here's this playlist, and here I am, so I might as well make sure I don't waste a day. 😉 Daddy told me when I was really young (6 or 7) that if I learned something, the day wasn't wasted. I've tried to make sure every day since to not waste a single day!

[jasper]

Would it be possible for you to make a computer science playlist?

[bepisdoge]

Halfway through the video: “I have no idea what any of this means”

At the end of the video: “I kind of know what all of this means”

[andybeans]

Last time I paid attention to this Tennessine didn't exist 😂

[SibidossSenthilkumar]

Thanks for your help to understand this concept

[illylilly]

I've always had trouble with understanding the periodic table. Will have to watch the first 7 to catchup. Great breakdown of this though as it was easy to follow.

[boredscientist]

Fluorides make beautiful glasses for optical applications from UV to mid-IR. ❤️

[Rayzersword]

The Halogens are my favorite element group, because I find it hilarious (though a bit scary) howuch the anti Fluoride crew misunderstand how they work. :p

[coffee]

Even though I have a Chemistry degree, it always amazes me that the Halogens are required for life but on their own can be some of the most toxic elements on earth.

[bvkamalakar]

Mentioned as Tn in description go through it

[markshort]

@Professor Dave it'd be good to put this series as a play list so people can just watch over and over until we memorize it

[ChrisBrown-pwlb]

Halogens?
I ate some "Halogen Mushrooms" one time.
Man.
I tripped for hours.

[bj.bruner]

I always find it weird that in the US we say io-DINE and not io-DEEN like the rest of the halogens. It sticks out like a sore thumb

[josephjahn]

Having received my undergraduate degree in chemistry it is embarrassing how little I recall 😅

[IDontKnow]

Could you please react to the last 15 minutes of “did dinosuars walk with man” from genesis apologetics because it has me really confused on where i stand, i would really appreciate it if you could explain it simply, thanks man love your vids. :)