[banaee]

Hi
I want to solve 10 μgr/ml ZnO nanoparticles which have been doped with Gd ( percentage of the doping is 5%) in 4.5 ml water with effective atomic number of 7.4
Now I need to know the effective atomic number of the final product.
I have studied the explanations about effective atomic number before posting this question. My major problem is calculating the number of  electrons of Gd and ZnO with the 5% doping.
It means that is it true to consider f1=0.95 and f2=0.05 in the equation mentioned in wikipedia?
and does amount of a substance has direct correspondence with number of electrons?
Please navigate me.
Thanks in advance
Nooshin Banaee

[Hunter2]

http://answers.yahoo.com/question/index?qid=20120103122619AAHvcfa

http://en.wikipedia.org/wiki/Effective_atomic_number

[banaee]

Dear sir/ madam
I have studied the explanations about effective atomic number before posting this question. My major problem is calculating the number of  electrons of Gd and ZnO with the 5% doping.
It means that is it true to consider f1=0.95 and f2=0.05 in the equation mentioned in wikipedia?
and does amount of a substance has direct correspondence with number of electrons?
regards

[kriggy]

1) yes f=0,95 and f2=0,05
2) How many electrons are in 1 atom of He? And how many in 10 atoms?
But amont of substance doesnt matter in this case because you are calculating average number which will be same when its 10g of your product and when its 100. The only that matters is proportion of those 2 elements