Quick Chemistry Help
Hey Basil, I need some help on some Chemistry problems, their pretty simple to answer but I don't know how to go about doing them. Any help will be appreciated. Thanks so much. =)
1) An electron is designated as being 'in' a '4d' orbital. Write down all of the possible values for the four quantum numbers for the electron.
2) Which energy sub-levels are being filled in the Group 16 elements?
3) Write down the complete electron configuration of each of the following. (I don't know how to make the orbital arrows in the boxes, but I do know the regular electron configuration).
a) Na
b) Fe2+
c) O
d) Cr
4) Which is most likely to be more metallic: H or Fe?
5) Predict the missing properties for the elements in the following table:
Element / Atomic Radius / Density at 20 degrees Celsius / Melting Point
Ar / 0.180 nm / 1.66 g/mL / [_______] <--Blank
Kr / [______] / 3.48 g/mL / -152 degrees Celsius
Xe / 0.210 nm / [_________] / -107 degrees Celsius
6) Which type of orbital is represented by each of these three sets of the quantum numbers, n, l, and ml?
a) [3,0,0]
b) [2,1,-1]
c) [7,2,2]
d) [5,3,-2]
Thanks again so much <3
7 Comments • Newest first
[quote=radkai]Listen to this Cornell student; he knows his science.[/quote]
oh my holy -- is that you kai on fb? I was joking by the way... I'm still a junior.
[quote=AmyrIin]Assuming you're not in AP chem, seeing as it's already late March and you're learning this basic crap, I think I can safely assume that you're in either regular or honors, if your school works by that standard. In which case let me say: DO YOUR WORK -- THIS IS NOT THAT HARD.[/quote]
Listen to this Cornell student; he knows his science.
Um, I'm pretty sure Fe is more metallic than Hydrogen.
To all of you blaming her for being lazy etc, have you guys ever considered that maybe she has a bad teacher because that can be very possible. I mean, she said she doesn't know how to "go about doing them" which can hint to that. Just my thoughts.
This is really easy... if you think it's simple then you could do it yourself >.>
Assuming you're not in AP chem, seeing as it's already late March and you're learning this basic crap, I think I can safely assume that you're in either regular or honors, if your school works by that standard. In which case let me say: DO YOUR WORK -- THIS IS NOT THAT HARD.
1)n=Shell number l=Subshell order-1 ml=-l....l ms=+1/2,-1/2 (spinning configuration)
2)(just test any element in that group and see which subshell is being filled.
3)Use the aufbau filling system to solve these, don't be lazy.
4)Hydrogen is a non-metal, Iron is a metal, you tell me
5)Just estimate, since they are all noble gases you can easily infer that going down, atomic radius increases, density increases, and melting point decreases
6)This is really simple.... You should know that n is the shell number, l gives you the subshell number, and that just leaves the set of orbitals.
NVM, my grade 9 academic science chemistry skills don't help here