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↪1) Aqueous Solution
↪2) Solvent
↪3) Solute
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Metals are the type of elements that are most likely to form more than one type of ion, for instance iron can form the ion of Fe^2+ or Fe^3+.
He thought elements that haven't been discovered belonged in the place of the gap. He could also use the atomic mass of the missing elements
The three factors determine the chemical properties of an element:
<span><span>The number and arrangement of electrons in an atom
</span><span>The number of valence electrons
</span><span>The number and arrangement of electrons</span></span>
