Hey guys just making sure my reasoning is correct:
1) Which of the following is CO3- - approximately equal in size to?
a) Mg ++
b) Ca ++
c) Sr ++
d) Ba++
I think it's D. CO3- - is an anion with a -2 charge. Anions are larger than a neutral element/compound. Although the answer choices are cations (and thus shorter than their neutral part), Ba++ is the best answer, because ion size increases down a column, so Ba is the biggest/ Right?
1) Which of the following is CO3- - approximately equal in size to?
a) Mg ++
b) Ca ++
c) Sr ++
d) Ba++
I think it's D. CO3- - is an anion with a -2 charge. Anions are larger than a neutral element/compound. Although the answer choices are cations (and thus shorter than their neutral part), Ba++ is the best answer, because ion size increases down a column, so Ba is the biggest/ Right?
-
The carbonate ion radius is 178pm
http://www.wolframalpha.com/entities/che…
Which doesn't make it close to any of those ions.
The C-O bond distance is 130pm, Ba2+ is 132pm.
http://en.wikipedia.org/wiki/Ionic_radiu…
https://docs.google.com/viewer?a=v&q=cac…
http://www.wolframalpha.com/entities/che…
Which doesn't make it close to any of those ions.
The C-O bond distance is 130pm, Ba2+ is 132pm.
http://en.wikipedia.org/wiki/Ionic_radiu…
https://docs.google.com/viewer?a=v&q=cac…