I just have 2 other questions that I just want to make sure on:
Place the following elements in order of decreasing atomic size: tellurium, bromine, argon, cesium, strontium, and selenium. (Te, Br, Ar, Cs, Sr, Se)
~~(or...the correct ranking cannot be determined)~~
I think that the correct answer is:
******* Ar, Br, Se, Te, Sr, Cs ********
Am I correct on this???
One other question to verify:
Which set of quantum numbers is "not" possible?
a) n=2, l=1, ml=0, ms=-1/2
b) n=3, l=1, ml=-2, ms=-1/2
c) n=1, l=0, ml=0, ms=-1/2
d) n=5, l=3, ml=2, ms=1/2
***I think that the correct answer, the one that is 'not' possible is "B".
Please let me know if I am correct or not.
Place the following elements in order of Decreasing atomic size: tellurium, bromine, argon, cesium, strontium, and selenium.
would the correct ranking then be:
Cs, Sr, Te, Se, Br, Ar ???
or am I still way off??
I think you have them arranged from smallest to largest; isn't that the reverse of the way the qustion wants them arranged? In the order you list them, the covalent radius, in Angstroms, as given on my periodic table is as follows:
0.98; 1.14; 1.17; 1.36; 1.91; 2.35.
Ar is before Br is it not?
ignore the "At"...it was supposed to be "Ar-argon"
Likewise, ignore this post. It isn't clear if we are talking about increasing or decreasing.
You had a post here that has disappeared.
If we go by decreasing size, we start with Cs (the largest) and end up with Ar (the smallest).
Your answer for B is correct.
That looks right to me but confirm it with those numbers I wrote in a previous post. I can't get both on the screen at once so it's difficult to check them.
you have them as: 0.98, 1.14, 1.17, 1.36, 1.91, 2.35
so...does this mean that:
Cs=2.35, Sr=1.91, Te=1.36, Se=1.17, Br=1.14 & Ar=0.98 ???
Therefore this order is then correct, as in being listed in order of Decreasing atomic size?? (this isn't the same as in order of decreasing atomic radius, or is it?..if it is not...I think that's where I messed up before)