Our knowledge of the atomic weight of this element depends chiefly upon the elaborate and carefully executed work of Seubert4 and Halberstadt,5 and the only question is how this is to be interpreted.

His principal contribution to chemistry was the 'vis tellurique' (telluric screw), a three-dimensional arrangement of the elements constituting an early form of the periodic classification, published ...

"Neon, as has been already pointed out, consists of isotopic elements of atomic weights 20 and 22. The mass-spectra obtained when chlorine is present cannot be treated in detail here, but they ...

He took the 63 known elements and arranged them into a table ... so he was going on only the atomic weights, which weren't necessarily determined to the right accuracy at the time," says Dr ...

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It is the principle strengthening element in carbon steels and low-alloy steels. Atomic number 6, atomic weight 12.01115. Manganese (Mn): Manganese is a brittle, metallic element that exists in ...

He wrote the properties of the elements on pieces of card and rearranged them until he realised that, by putting them in order of increasing atomic weight, certain properties of elements regularly ...

you have 10 minutes to name as many elements as you can, given only their symbol, atomic weight and the broad group they live ...