Do anyone here happen

[Spee]

Originally Posted by 1024

Why are noble gases unreactive?

Octet electron configuration. In other words, they have compltely filled energy paths.

[Rayder]

Is someone talking about elements? Because, no elements are manmade, they're all natural.

[1024]

tell that to my chem teacher.

[Spee]

Originally Posted by Rayder

Is someone talking about elements? Because, no elements are manmade, they're all natural.

Youre full of shit.


Edit: http://www.webelements.com/


* Name: ununquadium
* Symbol: Uuq
* Atomic number: 114
* Atomic weight: [ 289 ]
* CAS Registry ID: 54085-16-4



* Group number: 14
* Group name: (none)
* Period number: 7
* Block: p-block

Description speak description of ununquadium (requires RealPlayer) RealPlayer

Here is a brief description of ununquadium.

* Standard state: presumably a solid at 298 K
* Colour: unknown, but probably metallic and silvery white or grey in appearance
* Classification: Metallic
* Availability: Not commercially available.

Element 114 was reported informally in January 1999 following experiments towards the end of December 1998 involving scientists at Dubna (Joint Institute for Nuclear Research) in Russia apparently using isotopes supplied by scientists at the Lawrence Livermore National Laboratory, USA. Only one atom was identified and the claim has not yet been ratified. The results of calculations suggest that element 114 will not form a tetrafluoride UuqF4, but could be isolated as a water-soluble difluoride UuqF2.
Isolation
Here is a brief summary of the isolation of ununquadium.

Currently, the identification of element 114 is yet to be confirmed. As only about three atoms of element 114 has ever been made (through nuclear reaction involving fusing a calcium atom with a plutonium atom) isolation of an observable quantity has never been achieved, and may well never be.

[Rayder]

Originally Posted by 1024

tell that to my chem teacher.

Well your chem teacher is either stupid, or is trying to trick you. Is this a written question? Or did he say some elements were manmade and you had to figure out which ones were?

[Infernus]

Originally Posted by Rayder

Is someone talking about elements? Because, no elements are manmade, they're all natural.

HA... no... most of the bottom of the periodic table is man made...

EDIT: Man Made isnt the best term... most of the bottom of the periodic table has to be synthesised because it is not naturally occuring...

[Rayder]

The fuck are you talking about? They're natural.

[1024]

isnt the little section that's seperated at the bottom manmade?

edit....err....synthisizezdasfadgfadf...?

[Spee]

Originally Posted by Rayder

The fuck are you talking about? They're natural.

In the loosest sense of the word. yes, they are composed of electrons and whatnot, and we really cant make those. But they dont exist naturally.

Various research attempts in space has yielded manmade elements at zero gravity. Also, atom smashers have yielded some manmade atoms after sending two elements into each other at sublight speed, and the scattered electrons and neurons bonded together to form new elements.

Dunno what theyre teaching you, but theyre wrong.

[1024]

All of the elements are natural in a sense, but not all of them occur in nature by themselves.

[Lartnev]

I think the definition is clearer if you talk of it in terms of naturally occuring, and man created elements.

"man made" elements tend to exist for extremely short periods of time (we're talking milliseconds here) and are created in very extreme conditions (such as those in a nuclear reaction). At least that's my understanding of it.

[1024]

whaetever...MORE HELP WITH FINALS!! NOW!

what is the difference between entropy and enthalpy???

[Infernus]

Originally Posted by Spee

In the loosest sense of the word. yes, they are composed of electrons and whatnot, and we really cant make those. But they dont exist naturally.

Various research attempts in space has yielded manmade elements at zero gravity. Also, atom smashers have yielded some manmade atoms after sending two elements into each other at sublight speed, and the scattered electrons and neurons bonded together to form new elements.

Dunno what theyre teaching you, but theyre wrong.

So synthesized...

[Rayder]

http://www.howe.k12.ok.us/~jimaskew/cheat.htm

[Spee]

Originally Posted by 1024

whaetever...MORE HELP WITH FINALS!! NOW!

what is the difference between entropy and enthalpy???

HEY! GUESS WHAT!?