emergency chem help

[car]

does anyone understand the 1s 2s 2p 3s 3p 4s 4p 4d.... electron orbit thing, i undsterstand that stuff goes weird usually after 4s but why
please gimme some exaples, or an explaination, thanks
big test tomorrow:(

[ThE tV 8 mE]

what grade are oyu in? 10? or 11?

and what don't you understand? WHY it kicks electrons and brings them in??

[ninjak84]

Order of filling of orbitals. It's a topic about valence electrons.
The sequence goes like this (bottom to top):

6d
5f
7s
6p
5d
4f
6s
5p
4d
5s
4p
3d
4s
3p
3s
2p
2s
1s

What don't you understand about it?

[car]

no, writing these things
Neon=Kr - 1s22s22p63s23p63d104s24p6

[car]

Originally posted by ninjak84
Order of filling of orbitals. It's a topic about valence electrons.
The sequence goes like this (bottom to top):

6d
5f
7s
6p
5d
4f
6s
5p
4d
5s
4p
3d
4s
3p
3s
2p
2s
1s

What don't you understand about it?

thanks, do i have to memorize all that or is it on some sheet?

[ninjak84]

Gotcha, here goes:
1. Use spaces between the numbers, it'll be easier to read ;)
2. Have you been taught how to write it as [Ar] yet? The shorthand method? If not don't worry about it.
3. Go through the example below, and tell me what difficulty you're having.

Write the orbital diagram for Magnesium

Solution: Magnesium (Z=12) has twelve electrons that are placed successively in the 1s, 2s, 2p, and 3s orbitals to give the electron configuration 1s2 2s2 2p6 3s2. The orbital diagram is 1s2s2p3s. All levels in the orbital diagram are fulfilled by the properties of magnesium.

[car]

so the numbers infront of the letters have nothing to do with what ring of electrons it in

[ninjak84]

The number and the letter represent the orbital level.
For example, "4s" is the orbital level (ring of electrons).

[car]

OOOoooo, i get it
and then the the last ring are the valence electrons that are responsible for bonding
thanks

[car]

right, one more question
ionic bonding is when two ions bond by one giving aaway and the other reciveing an electron,
so
FeCl3 would be ionic right?

[ninjak84]

Ionic bonding is when an atom that loses electrons fairly easy meets with an atom that easily accepts electrons. Another way to put it is a "metal" bonding with a "non-metal". So yeah, FeCl3 is ionic.

You're welcome for the help, good luck on your test tomorrow!!

[car]

ok, my book keeps on saying that ionic bonding is only betwwen elements of group1,2 and 16,17
now i know its bs
thanks a lot for clearing that up
this book has a LOT of mistakes in it, like "you get a -1 charge by losing an electron"
and my favorite
"oxygen had 67 valence electrons"
:nut: think that was a typo

thanks again:)

[turbo_equiped]

o man!!
one absence in grade 10..!!
i still dont know wat tat all means..!!
:(

[car]

ya its pretty hard
go here
http://216.239.57.104/search?q=cache:cFDdWPI91l8J:www.chemistry.ohio-state.edu/~chan/chem121_autumn03/chan_Lecture13.pdf+sr+1s+2s+2p+&hl=en&ie=UTF-8

[lint]

Ahhh, brings back memories

[Gondi Stylez]

it goes weird after 4s cuz the electrons take an energy loss... they move down in the periodic table! what nijak said in shi post was pretty much it tho! if you can do it in shorthand it will be easier! but usually u just need to the know the valence e- configuration!

fuck chem 201 final in 18 days and counting! :guns: :guns: i still dont understand this shit!?!

what r u doin?! first level chem like me!! haha! :bigpimp:

[car]

chem11 at home

[Marsh]

woah chem 11...we just learned that first yr chem at U of C lol...man did i get jacked of my public education

[car]

:rofl:
o well, i think i aced that test though, thanks to all you guys that helped, especially injak84:thumbsup: