Chemistry: 5.5 Metals in Transition

Today we're learning about how forgetful transition metals can be. They lose electrons just about as quick as they find them. They'd probably lose their nucleus if it wasn't mashed into their center.

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ScienceChemistry

Transcript

00:13

medication to help them with their acute

00:15

cases of claustrophobia. Taking a gander

00:18

at the periodic table, it's no wonder these [Periodic table of transition metals]

00:20

guys are feeling a bit, uh, boxed in.

00:23

They've got clowns to the left of them,

00:25

jokers to the right. Well, they've got some

00:27

fundamentally different elements on both

00:28

sides of them anyway... But why are they

00:31

all lumped together?

00:32

What's with the complete disregard for

00:34

one's personal space bubble, hmm?

00:36

Well, the transition metals, all these [Table of transition metals]

00:39

metals located from groups three to

00:41

twelve, are rock-hard metals. None of that

00:44

wussy, cut-through-it-with-a-butter-knife

00:46

lithium business.

00:47

Yeah, they're often combined to make

00:49

alloys like brass, which is a mixture of [Alloy lands on table]

00:52

copper and zinc, but we wouldn't

00:54

recommend you using that tidbit to make

00:56

fun of any of the other kids in the band.

00:58

Woodwind isn't an element either. [Two kids holding musical instruments]

01:00

All right, well these fellas often find

01:03

their way into jewelry because they

01:04

don't break down easily and they won't [Zinc and Gold necklace around a womans neck]

01:07

react with water. Otherwise, running

01:09

through a sprinkler with a neck full of

01:10

bling could be catastrophic. Whew, just the [Girl runs through sprinkler]

01:13

thought of that happening is terrifying.

01:14

No wonder some of these elements are losing it upstairs.

01:17

Well, the doctor finally calls all the [Doctor standing in her office]

01:19

metals in her office--yep, all at once.

01:20

It's a big office, so what do you want?

01:23

She tries to calm them all down by

01:24

explaining how special they are. In [Doctor waves her arm at the metals]

01:27

particular, she gushes about their

01:28

electrons. The transition metals are

01:30

located in the d-block, meaning their

01:33

outermost electrons reside in the

01:35

d-orbitals. Because these electrons are [Electrons of a metal atom]

01:38

so far away from their respective nuclei,

01:40

the attraction holding them in place

01:41

isn't very strong, which paves the way

01:44

for high electrical and heat

01:45

conductivity and allows the metals to be

01:48

malleable, which may not sound like such

01:51

a tremendous compliment to you, but trust

01:52

us: whisper some of those sweet nothings [Transition metals in the doctors office]

01:54

to a transition metal and it'll be putty

01:57

in your hands... literally. The doctor

01:59

proceeds to heap praise on the metals in

02:01

hopes of boosting their self-confidence.

02:03

She applauds them for their shiny and

02:05

colorful appearances as well as their

02:07

high melting and boiling points. Again, all [Transition metals with rainbow above their heads]

02:10

stuff that's sure to make a metal feel extra

02:12

good about itself. By the time the

02:14

transition metals leave their doctor's

02:16

office, they're feeling much better about

02:18

their place on the periodic table... even

02:20

if a few of the alkali earth metals are [Earth metals standing in doctors office]

02:22

getting all up in their business.