S
sdfhgfbk
Guest
In Mendeleev's version of the periodic table, he arranged elements in order of their increasing atomic weights. BUT he placed tellerium (a.m.u of 127.69) before iodine(a.m.u 126.9), why did he do this???
And why is it like that on the modern periodic table???
This is all so very confusing!
And why is it like that on the modern periodic table???
This is all so very confusing!